There aren't any more resources to keep track of than in vanilla. I grabbed it (forgot I don't need the CD-ROM, silly me) and all the patches and gave it a spin.
holy shit dem rebels
I think the craziness is just that you're starting about 80-100 turns into a "normal" game, with an established presence on 3 or more planets, plus a token presence on several other planets which are held by other players (including League and Holy Church worlds, which are now more than just Leagueheim and Terra). FWIW, I'd be in favor of turning UW off, because you lack the infrastructure to produce a lot of advanced resources, so you'll need to deal with the League to keep your factories running early on. While there are agoras everywhere now, it still means you could cripple an enemy by interdicting purchased goods from the League. And/or you face the quandary of destroying an Agora on a planet to blockade it, but incurring the wrath of a much beefier League with its Muster soldiery.
I love that the League and Church have been buffed up, but I'm sad that they didn't do anything with sects. I got excited when I saw that there would be actual Eskatonic and Amalthean units, but sorely disappointed to see that these start as Orthodox. That's just lazy.
Also, there seem to be a lot of unit types that are either fluff or just six flavors of the same thing. Which is nice for the RP aspect, but doesn't necessarily add much to the gameplay.
Also also, it's a good thing nobles can be rebuilt because holy crap Hawkwood lost two in its first turn to rebels. Your nobles start scattered across your domain, often in far-flung farms and such with no retinue to guard them.