I hate to be a downer but you're flirting with disaster here. Copyright infringement everywhere.
Most shirts people submit have licensing issues and the shirts we have with licensing besides Astrosloth don't sell as well.
EDIT: Spam blocker has limited my capability to respond, so I hope you see this:
"You're right, when we first launched based on community reddit posts. We had whatever was most popular since it was being made just for them but we grew past that quickly and realized it was going to keep going. This was just going to be a fun one-off ordeal. Now I have an adviser for licensing and I take it very seriously. Thanks for the compliments too!"