The combat system & mechanics need fixes/changes - either by being MORE like D&D 5e (which I'd prefer) and LESS than DOS, or vice versa (though licensing problems may prevent that).
Tone down the romances - seriously, this should not be that obnoxious and forced onto players as it is now. Feels almost like Witcher 1 card-collecting, except you can only collect one card and the game reminds you multiple times that you SHOULD collect it.
The approval system and points allocations are weird (and abusable, if you're not a hard-core roleplayer) - and I'm not talking about the infinite approval bugs, those will get fixed for sure. I would rather make approval a hidden value and make the companions voice their disapproval, rather than seeing "X (dis)approves" (and probably make them generally less judgemental to balance that change).
Environments, locations - awesome, this is the one part that actually resembles BG1/2, as far as environments, colors etc. are concerned.
Companions - I generally like them (aka "consider them well-written") for the most part, at least after patch 3. The "everything happens at the camp" dynamics feels a bit overused, perhaps.
Story - So far so good!
Character creation - It's OK, though there are some (already well-documented elsewhere) gripes I have, like half-elves looking more elven than actual elves, tieflings looking all basically the same (there used to be lore reasons for that, but not anymore)
Buuuugs, glitches ,etc. - that's to be expected, though there are many bugs from the very first available versions that should be really easy to fix, but aren't - e.g. Ranger's Two-Weapon Fighting Style or Wizard's learning (all) spells, but that not being reflected on level ups - I would really like for the devs to focus on these quick win fixes.
Level cap is a bit obnoxious at later stages, maybe give us higher levels even if not all corresponding abilities/spells aren't implemented yet?