Example features I think it should have:
- no gameplay changes
- some aesthetic enhancements - gibbable corpses, etc.
- breakable objects
- physics objects if supported - fall back to MOVETYPE_NONE otherwise
- monster spawners - maintain population, total spawn limit
- APPEAR spawnflag - allows a monster to be triggered to make it teleport in, without a separate teleporter room
- warpzonelib - divVerent's portals system
- breakable light fixtures - a model entity that can be shot to destroy it and turn off the dlight
It would be preferable if the darkplaces features are correctly detected and fallbacks are provided - the mod working without darkplaces, as best it can.
Thoughts? Suggestions? Volunteers?