Originally posted by John Reynolds
Carmack isn't going to spend time programming these multiple paths if the plan is to ship the game without them. This is just again a situation wherein ATi made a very smart design decision by supporting 24fp -- good IQ and good speed. NV30 is either speed, 16fp, or IQ, full 32fp, with the caveat, as Carmack himself has noted, most users won't notice the differences between 24fp and 32fp but they sure will notice the performance difference.
Doom3 engine is feature-complete and the engine and editor are gold. their just handing it to the designers and letting them build the game you will see. (which takes over a year too)
im afraid Carmack's decisions cannot be repealed at this stage except in patches.