- Piece of history lost
- Makes it harder to boot up anything because not a complete, running application.
- Derivatives of the art are impossible
- Artists will have a hard time starting to tweak things, because there's nothing to tweak.
- Coders will despair trying to provide even a basic set of art (because we're usually crap at art) so they could start poking at the code.
Sadly, this "here you have the source, off you go" thing seems to be very prevalent, and it always irks the hell out of me.
If you don't want to release everything, alright, that's workable. But something, at least some basic art, say the first level or whatever suits you. I don't get it why that should be a bad thing. I also don't get why people seem to think that idea is bad.