[Miller]

So, I don't really have a say in the matter here, beyond "Hey maybe getting to do 3 actions a turn that do more damage than non-basic attackers due to exceedingly high damage scaling of GUI is maybe not quite okay"

Whenever I talk about Crit Evade, I see people appearing out of the wood works to go "It's OK. I have 210 crit without even trying hard, and can get even more." This is mostly a Filia thing, and I don't know how true it is.. but, personally, I'd love if maybe crit capped out, overall, at 75%. So it wasn't literally just guaranteed damage because someone couldn't afford to pay the LUC + Boneheart + FAI tax (of which, black water negates FAI)

Dark Water in it's main iteration, Black Bubble is actually delayed until the start of a new round before it removes your faith. There's a few instant removals, but they're extremely niche like dark water vials or belong to sources that someone running a critical build would rarely consider running. It's notable, but frankly speaking; you're almost never going to see someone use dark water for crit fishing unless they're absurdly desperate.

Critical builds with damage exceeding skill/spells by more than a small margin typically belong to Axes and GUI main scaling weapons which double up on SWA and Critical Damage and frankly shouldn't be represented as 'all critical builds'.

I don't really see much point in knee-capping critical to some arbitrary number either or removing the third action; a large chunk of the appeal of critical archetypes is access to passives that enable the third action and they're typically seen as 'more fun' by the people who run them. 

You could cap the upper limit of critical and even critical evade buffs like hit/evade, but I don't think we should ever have minimum/maximums in this game personally.