the problem is they had to give the goblins 3 times the hitpoints as a balancing mechanic for their unnecessary elevation system
I disagree with elevation being unnecessary. This is useful for tactical advantage and for strategy planning with the godsawful camera angles. If the enemy AI had some intelligence then the health could be more in line with what it should be. They should move to look for a hidden player and not just stand there like idiots, maybe some should even run away if they take damage. If they know an enemy is somewhere in the rafters then they should use some kind of AoE attack up there to flush them out. This kind of behaviour would also help those that insist they will only play melee and rush in to a fight.
5e already has a cover system.
Cover is easier to obtain at elevation, and harder to obtain at lower elevation.
Giving a 3:1 advantage/disadvantage is asinine, it's the single most important factor in any combat. It makes a low AC spectator as hard to hit as an Iron Golem or a Red Dragon is supposed to be, and it makes your platemail+shield character as easy to hit as a naked wizard. It also makes it impossible for your rogues to sneak attack a creature above them (this isn't hyperbole, sneak attack won't function in that circumstance, where as in D&D 5e, it would) Good luck if you planned on playing an Assassin.
To be perfectly honest, every CRPG is this to me and I still have fun with them. I'll let CRPGs slide on things I'd never accept from a tabletop game because of the limits of a computer.
But that said...I do hate some of the implementation of skill rolls. There are places where it feels like they replaced a dialogue puzzle with "roll a die" and it just feels frustrating and annoying when I run into that...especially in comparison to where they implement things well.
Almost none of the complaints have anything to do with the limitations of a CRPG
Changes from 5e like reducing the maximum range of attacks are a concession to a CRPG, because spell sniper eldritch blasts hitting things from across the map won't be workable.
Putting fire everywhere or making 5 feet of elevation confer a 3:1 advantage are deliberate design choices, not compromises.
