User blog comment:Elline paintbrush/let's flip into the battle!/@comment-24184651-20150322171355

First, let's take into account everything good he brings to Smash:
 * His potential moveset is unique and he sounds like a lot of fun to play
 * He brings more representation for Paper Mario

There are certainly more good reasons, but I can't think of any more at the moment. Anyways, on to the downsides:
 * He's yet ANOTHER Mario character, which is giving a bit too much representation for one series
 * He'd be the third form of Mario to appear, right alongside Doc. Couldn't we get a separate character altogether, like Toad? I don't know.

Those are just my opinions. If you disagree, that's perfectly okay.