
Just some thoughts...
A comment on an engine like "supports 128 lightmaps" is not really useful out-of-context. An engine coder might well be aware that the hard limit on lightmaps is 64, a modder might have that information as a result of trial and error, but a general player would not really have any reason to be aware of it. If a given engine supports higher limits, then it would be more generally useful to provide some descriptive info on it. This could be as simple as a matrix comparing engine limits with regular GL/Win Quake limits.
The "target audience" point is interesting to me - just who is the Q1 general audience today anyway? Identifying a target audience of "blah" might be useful to pin things down, but it's not really worth a damn if said audience consists of a grand total of two people.

I'd support a target audience of "engine coders" and "modders", with no real preference being given to either, as I think both audiences are in need of a good kick up the butt which this exercise could provide: (a) engine coders need to start being consistent and standardising things better, and (b) modders need to be prepared to constructively feed back to coders on what is good or bad for them.