The biggest problem I see with a level cap increase in this game is that it is going to require some sort of significant difficulty spike/mode beyond level 50 if they are going to give us more skill points.
Fl4k, Amara, and Zane already are all equally overpowered in their own, different ways (I cannot speak to Moze b/c I don’t play her, but from watching YT videos it looks like she has OP setups too), and the anointments that were added with the Takedown are ridiculously powerful.
For example, if you added just 4 or 5 more levels (not looking at skill tree right now), Fl4k could grab both The Power Inside AND Megavore, which would make him ridiculously powerful. Right now, with the skill cap at 50, you have to choose. I like the build diversity that limited skill points forces.
I would prefer that they either add additional characters or additional skill trees for the existing characters, as opposed to having a level cap increase. Unless accompanied by a BIIIIIG difficulty spike, like making the 4-player scaling switch apply to the entire game, adding more levels and skill points is counterproductive.
Just my $0.02 and opinions.
EDIT: I feel like an additional difficulty setting, rather than more skill points, might be the way to go.