Yep I reckon a Quake TC for AB3D is the way to go if BOOM cannot do it justice, we can use AmiQuake AGA for that because it supports Quake C. Quake looks really flexible, I've only started looking at it but
Quake C is really mind blowing, very clever stuff.
As I've already mentioned, another option would be to do a TC for AmiQuake 2 AGA (if I can ever get it to run fast enough!)