I have some rather scientific questions on the system of Huitzilopochtli...
1) Why so many planets? I find that good, really good, but do such stars accrete so many planets, or was it just done for creativity's sake?
2) Huitzilopochtli is a blue star. What does that mean for distances? How far are the planets from the sun, especially Atlacamani? How far is the innermost Xiuhtehcutli? There are some systems were planets are really close, or really far, so it could be anything between a tiny fraction of an AU and 1-2 AU for Xiuhtecutli.
The same applies to all other planets, e.g. Atlacamani could be 1 AU away just as Earth is, or much less, or much more if Huitzilopochtli is hotter. The same for all other planets... and: How far is Zacantzontli?
3) What rotation periods ("days") and orbit periods ("years") do the planets have? Is the Atlacamani year similar to the Earth year, or longer? Or shorter? And, on this note, why would you see a 38-hour-day as it prevails on Teotlale as "oppressive"?
What days and years do the life-bearing moons have in relation to their primaries?
4) How high are the highest mountains, how deep the deepest trenches on Atlacamani? How high is this "Corona range"? What is the highest mountain on Tepelloyotl?
5) Of what substance is the xenojungle of Chalchiutotolin made in order not to be attacked by a HF atmosphere? Is such a leaf poisonous itself, or is it just the HF atmosphere and "rivers" and "oceans" that are? Why is the xenojungle green, and what colour do the seas have?
6) Regarding Tloxipeuhca: Why would the Atlacamanians would to exploit the world at all? For what valuable minerals would they do that? Or are you referring to Humans? The same with "would face... liquidation of their assets and a war of extermination...": By whom? By the native Tloxipeuhcans, by Atlacamani, or by us Terrans? Or by a combination of the three?
Also: Both Rubidium and Cäsium are, as you can see from Wikipedia, highly reactive. So why would you mine the two elements, for what use would Atlacamanians use such reactive substances which (on Earth, at least) need to be stored under inert gases or petroleum oil? To form some compound?
7) What temperatures (surface) do the living (and, if possible to say, also the non-living) worlds have? We know that Atlacamani is more or less Earth-like (hotter or colder?), and that Nonohualco has 12 C. What temperatures are there, e.g., on Chalchiutotolin, and the same basically for all other (living) worlds?
8) What about gravities? How strong or weak are they?
Excellent questions.
1) The star is much larger than Sol, and just as metal rich. More material for planet formation.
2) Huitzilopochtli, being a type B, is more powerful and luminous than Sol by a large margin, about 900 times more luminous to be exact. The temperature range is on a
much larger scale, and the solar wind blew dust farther out.
Even blazing Xiuhtecuhtli is over 3 AU from the star
Mixcoatl is 10 AU
Huixtocihuatl is 18
Teotlale is 24
Atlacamani is 32
Nonohualco is 38
Huehuecoyotl is 55
Xochipilli is 90
Ometeotl is 200
Ehecatl is 390 (radiation here roughly somewhere between Saturn and Uranus)
Xantico is 551
Ixcuimilli is 640
Oxomo is 690
Zacatzontli is 740
Miquiztlitecuhtli is over 2000 AU!
Light and material was thrown farther out. There was quite a bit more of it to begin with though (the star formed in a nebula which possessed already a significant degree of metal content), so planets of good size coalesced in roughly the same timeframe.
3) The days of the terrestrials are similar to relative earth equivalents. Xiuhtecuhtli is tidally locked
Mixcoatl rotates slowly
Huixtocihuatl is an oddball, with a retrograde rotation due to the orbital shenanigans that killed it and gave it a moon
Teotlale's day of 38 hours I saw as "oppressive" simply because it's a long time to spend in gruelingly hot temperatures (an average of 48 degrees Centigrade) that bake the ground sizzlingly hot by afternoon. Standing in the open you'd have a bad sunburn in minutes or even seconds
Atlacamani's day is slightly longer than earth, but the average temperature is also slightly colder, so it gives the day's character a more laid back feeling
Nonohualco's day is shorter than earth, at about 21 hours, creating strong polar catabatic winds which gouge spectacular features in rocky uplands. Like North Dakota's badlands on a continental scale
Huehuecoyotl's day is about 19 hours
The gas giants have short rotations of about 9 hours on average. Their moons are mostly tidally locked, except for the outermost ones, which sometimes have independent rotations of their own. The outer moons of Ometeotl in particular have "days" averaging about 40 hours long
4) The highest mountain on Atlacamani is a peak of 34,000 feet above datum in the corona range (a region of crust being thrust upwards by plates converging from all sides at once). Barring the corona, the highest is a shield volcano in the southern hemisphere of about 32,000 feet. Barring that, the highest is 30,000 feet. The ever so slightly lower gravity and more vigorous tectonics allows for higher mountains.
The lowest point on Atlacamani is the bottom of a sea trench 10 miles below datum.
The highest mountain of Tepeyollotl is a gargantuan peak rising 15 miles above the world's mean elevation. Elastic materials stretched by tidal forces and a semimolten interior.
5) Naturally occurring polytetrafluroethylene chains form the basis of lipid-like substances that allowed the formation of cell membranes. The formation of FNA, a repeating chemical based on sequential units of complex organofluorine molecules bound by Vanadium and Arsenic compounds allowed for the coding of genetic information. The seas are a deep blue-green from orbit and there is a greenish haze due to yellowish hydrofluorine mixing with the blue light of Huitzilopochtli. The plants themselves are yellow to orange, with some magenta mixed in. Green plant trunks and stems are due to HF in their vascular systems. Being based on Teflon and other Organofluoriness, and filled with HF, they are quite poisonous to carbon life.
6) Human colonists in Atlacamani as well as the human government based from Terra. Chemical companies would exploit the natural supply of Rubidium and Caesium if allowed to do so, and would endanger local life. Humanity considers Tloxipeuhca a priceless marvel that should be handled with the utmost care possible. Any chemical company that tries it would face a war of extermination from the Terran army tasked to protect the world.
7) Xiuhtecutli's temperatures are in the thousands of degrees Centigrade
Mixcoatl's average is Mercury-like
Huixtocihuatl's is around 120 degrees Centigrade
Teotlale's, as mentioned, is about 48 C, Chalchiutotlin's is around 80 C
Atlacamani's is about 16 C
With Nonohualco I overestimated my head conversion

. It's meant to be more like 6 or 7 degrees C
Huehuecoyotl is about -34 degrees C
Camaxtli is a balmy 17 degrees
Xolotl is about 3 C
Tloxipeuhca's temperatures are around -60 C
Ixquimilli and Oxomo have temperatures nearing the range of 30 Kelvin, colder than Triton
8) Xiuhtecuhtli's is about earth's
Mixcoatl's is Mercurian
Huixtocihuatl's is a bit less than earth's
Teotlale is 1.2 times more massive than earth
Atlacamani is .95 of Earth's mass and less dense. Gravity is comfortably less powerful without being crippling to anyone returning
Nonohualco is .89 as massive of earth
Camaxtli's is only three quarters as pwerful as earth
Xolotl's is a 1.4 times more than Mars
Tloxipeuhca has Martian gravity