I don't agree completely here. I know that some people like putting some colors down on a lineart quickly, just as an activity, not to get real specific comments on it.

This, for example would have never been made if I had to show it off in any thread besides the line art thread. I don't believe it warrants a new thread, it doesn't really fit in any other threads I have, since those tend to be really project-specific, and I don't want any comments on it besides: "hehe, cute"
I'm all for cleaning that thread up a little, but this little bugger wouldn't have been made. You see where I'm coming from? I understand your need for consistency though. What about creating an Off-topic Pixel Doodle thread? We can post half-assed pixeled work there, and small lineart colours. Basically, if done that way, you're separating the current thread into a lineart thread, and an offtopic one with lesser art.