I have been searching for a game engine that I could use for this project rather than egl...or maybe find someone modding egl or something. Well, this morning I ran across this and fooled around with it a bit...it runs our dday maps aswell as our new q3 .bsp maps. It's default settings are not optimal to our game and it's clunky to navigate menu at first, fov is way off by default. But, I think with some customization of it's config files will make this a good candidate for this project and perhaps as a general client for all ddayers.

Check it out,
http://www.fteqw.com/