Any chance that, if not for this summary, then sometime in the third year cycle, we'll hear some of the debate of the American pro-imperialist/pro-war types versus anti-imperialist/anti-war types?
We'll certainly hear from them during the third year, especially once the run-up to the 1896 presidential election begins.
Right now, as you correctly guessed, there are two factors that will be key to determining whether the United States enters the war: the Amazon and Spain. In the Amazon, both the BOGs and the FARs have thus far been very careful to avoid interfering with American rubber interests. The trouble, at least from the American point of view, is that the BOGs have now made an alliance of desperation with the quilombos which involves land reform and progressive labor legislation. The British and German rubber companies - and to some extent the Dutch ones as well - will swallow that for now in order not to appear unpatriotic, but the American companies have no reason to do so. Also, the Army of Angelim has never had any qualms about attacking rubber plantations, and although their new Anglo-German allies are currently restraining them, it would be very easy to provoke an incident. There's a lot of dry tinder in the Amazon right now, and if it falls on the right ears in the American newspaper-political complex, it could ignite.
Spain has, as you say, been pushing the envelope about as far as possible. So has Ethiopia, with its volunteers in the Russian army. Right now the BOGs have bigger problems, so they're willing to let both countries be, but if the Spaniards ore Ethiopians try their patience even a little more, that might change. In that event, Cuba and Puerto Rico would be very tempting prizes for American imperialists (not to mention that the BOGs would also have something to offer Japan in exchange for cutting off Russian access to Korea). Of course, American entry into the war against Spain would also leave the American-owned Amazon rubber plantations as fair game for the Franco-Brazilians, so there would be a down-side risk as well.
You're correct that the South Carolinians would mostly want to stay out of the war, both because they see no good purpose in it and because they can make more money as neutral merchants. The wild card is Sierra Leone. As I've mentioned, many of the Gullah families have made business connections there, and some have even married into Krio families and become naturalized British subjects. Sierra Leone is now under siege, and the South Carolinians will want to do something to help, although that would probably stop short of outright support for war - there will be a few volunteers fighting for the British (maybe even with Usman's irregulars) but most will favor lend-lease aid.
We'll hear from a couple of the South Carolinians personally during year three, as well as some other American political figures, both pro-war and anti.
In regards to rebellions, I fear my phrasing wasn't clear. I meant that an 1848-style repression of the rebellions would be less likely, rather than the occurrence of rebellions themselves. I do believe that, should large portions of the loyalist army avoid internment, unlike OTL, then Habsburg deposition shall be a more difficult affair, especially as Franz Joseph is still upon the throne. So, depending upon the circumstances which end the war, the Habsburg Monarchy mightn't pass out of history quite as peacefully as she did IOTL.
OK, now I understand. This war will, if anything, be more destructive to the Austrian officer corps than OTL, given that the empire is fighting on three fronts (North Germany, the Ottoman Empire and Italy), so the will to suppress an 1848-style uprising might not be there. On the other hand, you're certainly correct that an autocrat like Franz Joseph won't go gently into the good night. If the war turns against Austria-Hungary, things could get ugly.
Hmm....how about something untouched so far.....Canada.The Conscription Crisis was quite important, and I do wonder if anything similar will pop up here.
I assume the Quebecois won't be any more eager to die for the British Empire in TTL than in OTL - if anything, they'd be less so, since one of the opponents is France. And conscription would at least be under discussion by now, given the empire's manpower shortage. I may include something about this in the "empire at war" section.
Also, do you know where the primary African-Canadian communities were located at this time, and what relationship (if any) they'd be likely to have with other Africans in TTL?
I am grateful, Johnatan, for this update, especially because it made me aware of the incredibly awesome Magyarab. I would be happy to know more about these guys, both IOTL and ITTL.
Interestingly, i found a report pointing to a spin-off group emerged out of them, in... Congo. Sadly, according to a blogger (could not find the link now, sorry) it seems to be a hoax.
In TTL, reports of spinoff groups, or groups influenced by them, may prove to be more accurate. They'll visit a few places before all's said and done.
Also, do you have any opinion on Samoht's suggestion about Venetian nationalism - i.e., that a wartime Austrian occupation government, or Austrian agents who are attempting to destablilize Italy, might encourage separatism there? Would a fringe separatist movement be likely after the war, assuming that Italy survives as a united state?