I too was pretty mystified that one of the most interesting RPG setting developments of the whole of the 90s was gutted to make way for… Planet of the Apes. Really??
Yeah.
Might as well have replaced with “Zombies”.
Alas.
Still, most of the sessions I ran were almost all contemporary, though I also did some Ancient ones, I never really set sessions in that future setting, but I had characters and antagonists from it.
Ultimately, they have the abominations as characters so I think the rules from that setting are still tucked in the new book, just not evoked by the setting as much. Shouldn’t be too hard to bring it back.
Note: I never read the setting book for the Architects of the New Flesh or anything, so I don’t know about any expanded rules or anything like that, just what was in the revised core book.