heh. Doubtful. I'm sure if he did Open Source it (The glide wrappers he uses are already open source) he may get a few loonies who would want to work on it but it's not likely. It's a complete waste of time. AFAICS, the only reasons to use GliDOS:
1. You absolutely postively need to use the texture packs for TR1. (This of course is worth it but if Paul doesn't come up with a good solution for 64bit machines then it will not be compatible for long).
2. You have an ancient machine that cannot run games in DosBox as well as games in GliDOS at sufficent speeds (We're talking 3+ year old processors here).
The big thing with Vista is that finally a 64bit OS is there for home users (Welll...at least as far as the Avg joe is concerned....we all know Linux has been here forever), finally decent 64bit drivers are available for Vista. Unfornately (or fortunately) 64bit Windows kills NTVDM so Paul has to reinvent the wheel that's already been invented years prior. (DosBox or Qemu)