Oh wow, awesome! And when I said Tapastic catering to short comics I probably should have said something more along the lines of "the Tapastic Community". It's a community that shares things on social media, and it's the community that collectively takes interest in the funnies. The site just reflects that. I am actually really happy with Tapastic as far as a publishing site goes. It's much easier to reach fans here than on anything else I have ever tried, and the staff is very vocal and eager to please.
As far as suggestions go, I think it would be pretty beneficial if creators were able to put themselves in groups, similar to the option deviantart offers. You could request to join a group and then the members look over your work to see if you have a comic similar to their own. It would make it easier for readers new to Tapastic to find similar comics, and then there might not be as much pressure to feature all different kinds of comics on the front page. The suggested reading section you offer now is helpful, but I feel like it could be more effective this way.