Which duelist to learn after "mastering" BP?

After playing mostly Thor last season I decided I wanted to get good at BP, and I think I achieved that goal at this point

Up next I want to get good with a duelist that can be used when I have a bad BP matchup and reached the following conclusions:

• I thought Bucky would be a good option, considering how much he made me suffer, but the almost complete lack of vertical mobility after playing Thor and Panther for so long really made me not enjoy him;
• Even though I also love Magik, I think she is somehow similar to Panther, at least in the sense of which matchups will screw her up;
• I also don't like playing flyers, as I feel I'm too slow while floating around;
• I can't aim well enough to get consistent use out of Hela, Hawkeye and Black Widow;

That leaves me with just a couple of choices: Star Lord, Namor, Moon Knight, Squirrel Girl, Scarlet Witch (?), Psylocke (?).

I've been trying them out and I can do relatively well with all of them, but I would like to get some insights on which one do you think would make more sense committing to, considering I already have Thor and BP up my sleeve.

Thanks!

(Before someone says Strategist: I can play most of them to a relatively good level already)