That HyperG crap is old, but ya it was what had initially cursed the DOOMX project back in the day, since then Lantus has taken a fresh interest in DOOM. I'm not sure if anything will manifest from it, but he did say a few months back that he was looking into prBOOM and Legacy...
...and I recall at the beginning of the year he told me he was watching Legacy as they work out there bugs in there C++ conversion.
So perhaps somewhere between a RickX bug speed issue fix, a Quake OpenGL update, some Quake 2 bug fixes, Duke 3D bug fixes, Surreal64, and what ever other surprises he may randomly drop upon us...
...we might end up with a port of DOOM in one incartation or another. At this point, though I am a die hard Legacy fanatic, I'd pretty much be happy with anything networkable with Deh and Free Look support.