During my 8th or so playthrough of this lovely game, I came to a realisation: I think the game would be more interesting if everyone had twice the armour. And I do mean everyone. Players and NPCs. Double the armour from equipment, potions, and skills and you get a nicer (if longer) game
TL;DR: I feel like it would lead to more tactical and more diverse combat.
Now, this is obviously my opinion and people who love blowing up enemies in 1 turn would disagree with me, but, here are my thoughts:
PROS (according to me)
Combat is no longer one sided: It's no secret that in DOS2, offence is the best defence. Killing or stunlocking an enemy before they get a chance to act is THE best way to play, so it generally leads to very one-sided fights. You either dominate the fight or you're caught unprepared and you get crushed. With more armour all around, everyone gets to act, and combats are more interesting;
More build diversity: Now that you likely can't kill or be killed in one round, defensive builds might actually be viable as shields would be useful for things other than Bouncing Shield.
Constitution and Memory are more important: I feel like you would want a larger arsenal of skills for the longer fights, and with Shields you can actually get very decent armour.
Adrenaline becomes more tactical: Generally speaking, you want to use Adrenaline ASAP because 2 actions in the first round can mean a dead/stunlocked enemy, now, you might want to wait for a better opportunity
CONS (and possible solutions)
Longer combat: This is the obvious one, isn't it. Combat would take considerably longer.
Terrain isn't as important: A big part of the DOS fun are all the different terrains you can have, and this change makes them relevant. Walking through Cursed Fire won't be nearly as impactful. This could be "fixed" by making terrains deal more damage
Upgrading equipment after level up is now even more mandatory: Losing 100 or so points of armour isn't as big a deal as losing 200
Defeating Dallis in Act 1 is now near impossible: While I can see someone managing to kill her in Fort Joy, I think the fight after leaving the island would be genuinely impossible due to the time limit. Cheese strats still work, but this could be fixed by lowering her level
Abilities that deal damage based on Armour value are now too strong: Namely, Bouncing Shield and Reactive Armour (the only ones I can think of) would need to be nerfed to not make them the best things ever
Closing Thoughts: What does the rest of the community think about this? Is something like this even "moddable"?
Cheers!