I loved the dual shield builds in Dark Souls 2 and Dark Souls 3, but as Baardvark said, it may not fit the tone of the game. Maybe then such a thing could be modded?
I've been digging into some of the unobtainable spells recently, and there is an ability that triggers when someone gets within range (displayed by a circle outline surrounding your character). It's kind of interesting the way it works:
You toggle on this sort of "stance", which then unlocks a few abilities (kind of like a permanent polymorph). One of those abilities is this melee range trigger spell, which lasts for a few turns, and hits an enemy when they walk into range. It's like a reverse attack of opportunity, with slightly bigger radius. The way the AI interacted with it was interesting as well. Ranged enemies would purposefully try to stay outside the circle (this mage with dual wands was unable to attack me, as she didn't want to enter the circle), and melee enemies with armor would charge in.
I mention this because depending on if we can get this ability in-game or not, it could provide another means for zone control. I imagine stacking this with Opportunity would work pretty well (provided they both can trigger when enemies move in and out of range).
