I'm another big fan of this game, both the plot and the gameplay. I love the little touches in the ongoing plot like naming a captured base after the lost leader of your first mind worm boil. And the 'distant finale' that comes with the Transcendence victory is just wicked cool.
I must state that I philosophically absolutely disagree with that anti-individual concept, but

- well, if one can reach that level, those are the best games. Long-drawn and fun. Of course, most of the time you utterly dominate everybody else before already, and simply moving around units in the world is no fun, so Ill usually have myself be elected Great Top Honcho, or whatever the title is
Of course, the assistant storyline and the Centauri technologies/transcendence storyline are also the
only plotlines in the Book of Planet...
I also have the Alien Crossfire expansion pack, which increases the replayability by increasing the number of factions.
I dont like it. The new (human) factions simply make no sense at all. They would make sense as an expansion to the old factions (and their storyline is written as such), but since you can only have 7 factions, well... Also, it makes no sense to have the ideological goals in the 4th category (whats teh categroy name for that, again?), because that only comes up after centuries. And finally, the new Centauri units are... meh. Make the units too bland - a non-transport naval combat unit and an artillery unit. The fun of the mindworm units was that before they were not 1:1 equivalents of normal combat units...
The new landmarks are fun, though. However, the main use of the SMACX CD to me was the update to SMAC 4.0 before the time I had internet, heh.
-Oh yes, the AI's useless legions of artillery and infantry that fall like wheat before the scythe once 'copters are invented. 'Copters are a bit broken in SMAC, to be honest, though they can sometimes be suppressed in usefulness if the enemy has lots of interceptors.
*chuckles* And whats better than Interceptors? Right, Copter Interceptors, which can also attack several times a turn

But yes, once you have copters and droppod units the game is essentially over. However, it doesnt even take copters - rovers are quite sufficient to have quite an advantage over the lame enemy infantery. Thus the only real enemy is Santiago, because shes the only one to also use rovers. (Well, Miriam sometimes does, too, but it are then nearly always the ridicously expensive armoured rovers...)
-With Alien Crossfire, the satellite supply problem is alleviated because you can get a new Secret Project much earlier than the Space Elevator that gives you an Aerospace Complex in every base.
...How is that allievating it?
-Crawlers are indeed great for massively boosting resources (especially from one-use squares like mines), but they are vulnerable to mindworms. In fact, playing with abundant native lifeforms is a good way to make the game more challenging.
But theyre so easily replaced... hm, that reminds me maybe a quick fix to alpha.txt to make them more expensive? Should work. However, besides, theres still the other use xchen has said, transferring all minerals and energy units (or at least all of one continent) to a single base, each.
Always play with abundant native lifeforms. It gives you 25% boost to your score, and at worst hurts your opponents more than it hurts you. (well, except for the Gaians and the Cult) At best, you should think of worms as a very nice supplement to, if not your primary source of energy credits. The more worms there are around, the more prey there is for your worm hunting rovers, and past Fusion, it's actually pretty cheap to pack res armor and trance onto your crawlers making them actually not that vulnerable should a worm outbreak somehow occur where you have no worm hunters available.
So in other words that makes the game even easier

And primarily it makes the game easier because the AI has no clue how to properly deal with fungus...
You can expect a well set up Worm bait base to net over 500 energy credits a turn in planet pearls.
Whoa

That would be... around 16 worm units generated every turn? That would mean the entire base has to be re-terraformed every 3 turns or so!
Better yet, if you set it up early, thanks to that wierd bug relating number of clean minerals to the sum total of fungal blooms, it greatly reduces the chances of global warming.
Uh, what? Please explain.
I loved the quotes. I like how some are linked, such as the "God does not play dice", followed later by "...Not only does God play dice, the dice are loaded!"
"Why do you insist that the human genetic code is "sacred" or "taboo"? It is a chemical process and nothing more. For that matter -we- are chemical processes and nothing more. If you deny yourself a useful tool simply because it reminds you uncomfortably of your mortality, you have uselessly and pointlessly crippled yourself. "
-Chairman Sheng-ji Yang
"Looking God in the Eye"