I'm definitely starting with Litten, because I played Moon twice and chose Popplio and then Rowlet on my second run. I also want to train Golisopod and Pyukumuku finally. Maybe A-Persian, Bewear and Sensu style Oricorio. Of course it depends what kind of new Pokémon they bring to Ultra-Alola, hopefully there are new A-forms or Megas. How about you?
Hopefully we can meet some of the important characters in future games. That way there's no need for SM sequels imo. The characters are why I'd want a sequel in the first place. (I dislike the theory that Ultra might completely change them haha.)
BAHAHHAHAHAHAHAHAHAHAAAAAAAAAAAA IKR!?!??!?!?!?!?!? THAT CREEPY GUY!! When he was first appearing, DIDN'T LIKE that he was BARELY AROUND at first, thankfully the last half of the Series he did show up more often.