New game mode idea...
It's called "paint drying" mode. Hear me out! You click a link in game that takes you to a web page where someone has just freshly painted a wall. You choose a character and then that characters sits and watches the paint dry. Once it's dry, you can save it, but if you don't, you'll have to wait until the next day to repaint the wall. Or if you spend $10 you can get "instant dry" which allows you to get a minor amount of shards which you can use to pull Red Hulk.