I did notice that you could turn off screen shake entirely. But admittedly a lot of the visceral feel of the combat goes away when you fully disable the screen shake. But when you have too many Leeroy/knockback projectiles/bouncing projectiles. It just reaches the point where simulation sickness sets in. Wish there was something like an intensity setting, or a way for it to cap out at how often a screen shake can get triggered.
I agree on the opaque thing. But I was more thinking something akin to how CC Diminishing Returns works in WoW. Where 1st hit = full value, 2nd hit within 10s = half value, 3rd hit = 1/4 value. Then 10s of immunity before it resets. That way you still get knockback when you pick knockback. But you can't just perma nail enemies against the wall.
Edit: Also there's a wording issue (or a bug) with how multiple pentagrams work. If you have adept pentagram and the item pentagram the wording is "when you stand inside a pentagram" But the item one gives the 20% damage ONLY and the adept one gives the adept bonuses ONLY. The wording would mean that both pentagrams should give adept bonus AND 20% damage bonus.
Edit2: I'd suggest reformatting Grimorius tooltip so that the -10% armor is above the "on level up"portion. The indentation difference between the +1% speed and -10% armor is small enough that I read it as losing 10% armor on every level up.