You missed one of the pros of Mii! Remember how there was a big meme about putting Reggie in the new Smash, and Reggie acknowledged it? Downloadable Reggie Miis for Smash! Reggie WILL be in the new Smash Bros! :D
Palutena, ugh, I don't get why so many people think she'll be playable. Sakurai has said in the past he doesn't want to over represent his own series. Palutena is already present in a Kid Icarus stage as a statue, with Sakurai saying she's "watching over" the battle. The most I could see is an assist trophy. I'd honestly be surprised if she made it in.
Anyone who doubts Chrom is an idiot. He's the safest bet out of any of your top 20. If fact, he's a safer bet than any returning character, as far as I'm concerned. I'm personally hoping Nintendo will get creative and have him paired up with another character like he can be in Awakening through the Dual System. So much potential. Do it Nintendo!