There is one (1) singular reason Gambit doesn't get nearly as complaints as Sue, and it's that Gambit mains actually recognise that he's busted, so there isn't much discussion to be had in the first place
like they gotta remove at least one if not two things off that ult. if they just nerf the ult charge generation it should be fine. you can kill thru his ult with good coordination so i dont have a problem losing that or the vertical jump boost