True that. Lots of 'solos' like Thor tend to have decent-sized supporting casts, whether it's non-hero civilians getting a deeper dive, like Jane Foster, or allies like Fandral, Sif, Hogun, Volstagg, etc. X-Men: Red has been called a Storm solo in all but name, with Sunspot, Fisher King, etc. as her supporting cast, and it certainly seems that way sometimes. (Less to my taste preference, Marauders often felt like a Kitty Pryde mini, guest-starring Storm, Iceman, etc...)
I wouldn't mind an Academy X-era reunion story that focused on the story / POV of one of the characters more than others for an arc, just as the New Mutants sometimes had an arc dedicated to Ilyanna's or Dani's demons/bears.
Oh hey, on my list of pitches above, I forgot Rockslide, who definitely has some story to tell as he finds his way back or comes to terms with his new status quo (which has not been adequately explained or explored, IMO. If he's all possible Rockslide's mashed into one, why isn't he more able to change forms or appear in his human form? Are there infinite versions of him and not a single one of them can pull a Colossus and be a flesh-boy for a time? That sounds ridiculously contrived, even for a genre with people that can shrink to the size of an ant and still be super-geniuses with a brain the size of a pinhead...).