ADOOM was kool, it did at least support DeHackED if I recall correctly. Though of course it is pretty old and out dated, and we are making the move to PPC which means we should also have an updated source port such as DOOM Legacy or ZDOOM.
As a matter of fact Legacy is currently being converted from C to C++ for portability, and it will add in extra features upon that release, one major update being support of Q3 models.
I've been working with Legacy for over 3 years now and I am VERY impressed with it so far. I would not say it is for "simple minded people" as you can use Fraggle Script to script in some VERY complex events into the game. On top of that it has VERY good support for DeHackED which is used to alter how the enemys, weapons, projectiles, items, ect act. The game can also be played in OpenGL, supports 3D floors, translucents floors, walls, real water, ect ect ect. I could only go on and on and on, but I'll stop short here.
If you wanna discuss Legacy further, many of its devotes and the author hang out in the Legacy section of the forums @ newdoom.com
Also you can find some more DOOM related stuff at DOOMworld.com which is less Legacy friendly, but a kool place to hang.
And of course before I go, if you wanna keep up with my Starwars Legacy project you can find the "current" web page here:
http://www.angelfire.com/theforce/doomlegacy/Glad to see there are still DOOM players in the Amiga world!