If he needs anything it's a nerf. He's definitely in the S tier right now.
Buff the 3rd most powerful hero in the game? Do you even play this game, or do you just main Gladiator? He needs nerfs.
Low health and short reflex are the only things that make Glad somewhat difficult and fair, it just needs its zone toned down.
Gladiator is perfect as is. He has moves for days, great stamina/recovery and hes agile. His side step and back dodge are quick as ish and will get you out of most situations, barring a wall being behind you. Leave my 2nd character be.