What about Grumpy's User Templates ?
Among these templates are :
-Antique desktop :minimum memory / processor requirements?
-Ubuntu Junior : Large icons. Access to games like tuxracer and applications like tuxpaint.
-Ubuntu Game Station
it would be nice to make Ubuntu derivates and User templates the same thing. If someone wants a lot of games he installs "Ubuntu Game Station". Some volunteers could oversee which packages from the official ubuntu repositories would be installed. Those volunteers could also take up the job of getting a specific package into universe because they need it for their derivative/user template.
For example the guys from beatrIX could work on the user template Antique desktop if Ubuntu and BeatrIX would want that.