This is a question and advice site. I think communities would be a very good addition to the site. As ou can tell by my username, there are some things that really interest me for example, if I made a drawing and wanted to share it with others and get feedback/critique. No offense to non artists but I'd rather hear feedback from other artists. Good idea or?
gag is a community. that's how it was designed. dividing it further wouldn't really promote gag as a community. it'd turn it into high school, where all the artists hang out, or the fashionistas get to talking, or the sex crazed people get to discuss their fantasies, or the virgins describe how ashamed or proud they are...
Yes and no I suppose like you I am an artist and comments from non artists are never really helpful. Because no offense to them they have no clue what to look for or even what style of art I'm painting in :/
But at the same time I don't think dividing community into smaller ones is a good idea it would leave to bad stuff, so instead opt for an art forum.