I think it's a great idea, and I have been thinking about something similar. I think it would be great for artists and creators of "art content" to help each other out with mutual support, challenges, contests and above all engagement.

Edited to add: Also check out @paolobeneforti's post: https://steemit.com/art/@paolobeneforti/art-content-creators-have-to-help-themselves-proposing-a-collective-work-to-get-more-visibility-and-steemarket-art-contest-3#