I love the idea !
Justa like there are dirtos for network arch, for dev, for bureautics, for anything…
Make a dist for 3D and ‘crazy things making’…
ahahah you’re crazy man !
but i love this idea 
for now i do this: Carcassonne Medieval city
my tools:
- Blender —> ( avl on nux ) main creative place. modeling, texturing, organizing… all is centered on blender.
- Gimp —> ( avl on nux ) 2D texture creation. No need to say more, gimp was born on linux
- Audacity ----> ( avl on nux ??? ) for all the sound and audio things
- Unity3D —> ( avl on nux tho i never tried it ) for scene integration, and serious game building just because it targets many platforms.
Ah !!! important !!!
- VLC —> for listenning to my musics when developping
side tools ?
- Shotcuts —> ( avl on nux ??? ) for making HD videos
- Screen2gif —> ( avl on nux ??? ) for… ‘lemme show you what i do’
- Notepad++ —> ( avl on nux ) seriously… who uses another tool for writing code ?
- MakeHuman —> (avl on nux ) somewhat useless except for their low poly human model… sent to blender and rigged/animated in it.
- Shadermap ----> ( forget about nux except with wine ??? ) for playing with textures, bumps, disp, ao…
- 3DEM —> ( avl on nux ??? ) for terrain importing ( the real work has to be made in unity with scripts )
errrr… well i think that…
Apart a big bunch of 2D/3D repositories handling, with such this setup you’ll only miss the famous plugin with the BIG BUTTON: ‘make my game’ 
happy blending and hehehe nuxing