does the USKP do anything with critical hits? as I feel some of the weapon perks are kind of useless right now, bladesman especially

if not are there any good mod solutions?

or do you feel critical's are balanced right vanilla and I just don't get it?

There were bugs discovered with the way Bladesman crits were set up (it hard-set crit chance instead of adding crit chance) that USKP fixes. They interfered with the critical charge perks, which are meant to make crits always occur on sprint power attacks.

Well they are not very useful, but neither are the axe and mace perks. I'm assuming that most perk overhaul mods would probably change these, so you might want to check out skyre, requiem or similar mods.