@Yottle
2.4.0 is Anonymous Hero's port to C++17. Among many other things it removes traps entirely. See:
https://github.com/tome2/tome2@Bast
Bringing back the ID minigame would require some pretty extensive patching I think. I have no idea where you'd start, sorry.
Monster list, try '/'. Be warned that searching the list with Ctrl-m currently crashes the game (LOL guess I'll investigate that).
Automatizer: hit 's' in the Automatizer screen to save a ruleset, and let it be saved (as per default) with the name of your character. Be warned that the automatizer is extremely bugged right now, IDK if it's even possible to add rules outside of destroy-item prompts (and you may also get crashes).
Differences from 2.3.5 to 2.4: Alchemists have been removed. Boost is required as a build dependency, and CMake in order to build. Compile times are much slower because it's all C++ now, and includes a bunch of Boost stuff (using ccache to speed up repeated builds might be a good idea). The Lua stuff is all gone, but the famous Theme module is now built in along with the original ToME.
People still involved: Anonymous Hero still is very intermittently, I still am very intermittently and with the caveat that I'm terrible with C++ (and with all serious programming really). Probably a few others even more intermittently. But it's not dead yet.
ToME2 on T-engine: yes! You can find it in the Modules subforum. Last I checked it's less complete than 2.4.0, but Zizzo seems to be pretty active and on top of things.