So because of a suggestion, I decided to create this thread about this wiki page on Giantbomb.com. It contains everything that there is to know about P4U, including character movesets, stage descriptions and story details, as well as every image that has been released of the game so far. I've contributed a big part to it, but it's still a group effort with other users at that site.
If anyone has any suggestion as to how I could improve it, I'd like to hear it. My goal is to make it the best wiki out there for P4U and, so far, that seems to be the case.