All right, I think I'll be leaving Infitech after I've started up my fusion reactor and seen that my design works (still making fuel). I've done what I came to do - to see what "hard" mode GregTech is like - and at this point the fact that I'm not exactly the target audience gains prominence in my mind.
My experience can be summed up like this: I love the complexity, but hate the grind. With the unified design with GT at the center and other mods integrated into it as much as possible, IT2 has definitely been a more rounded experience than any other pack I've played. I even came to appreciate some of the stuff that sent me up the wall when I first encountered it. I still don't like how empty much of the underground feels, but I just know that other packs will feel partly cluttered and off-center after this. Also, AE2 and GT appear to be made for each other. Some days, it seems, I added machines to my AE2 autocrafting setup by the minute, and I never made so many patterns before in a single world. That's something I want to do again at some time. On the other hand, I'm unwilling to put up with more grind. Should there ever be a pack with similar GT integration but with some anti-grind mechanisms added to it, I'm game, but for now I can think of other games-related things I'd rather do than go on. I'll keep my world, though....