They came up with "solutions" for stuff that actually does work, as Solasta has proven, making it worse.
Currently with how the ruleset and mechanics work, combat is focussed around the Larian homebrew rules and changes, which is very similar to DOS combat mechanics. The D&D ruleset did not really survive the translation at all, nor is the game a true D&D experience. It feels more like a blend between DOS and Dragonn Age to me.
If you are looking for a D&D style game, which that basically says, you are going to be dissapointed. Not happy.
I think that's a fair take. I want to be fair to Larian (in that they never offered a faithful adaptation), but that doesn't mean I don't have my own issues with the game.
For me, I'm most unhappy about improper-reactions and no-held actions (which I think removes an entire strategic layer from the game).