Going to be honest, all your issues you've expressed irritation about are all unchanged from 5e, and they aren't likely to change unless Larian decide to give up the idea of making a DnD game entirely and go full divinity mode on the combat system, which they won't do, because they've already spent too much time and money getting it. You say you don't care about the 5e ruleset, but this is supposed to be a DnD 5e game. They certainly spent enough time advertising it as such.
Yes Fighters are powerful in the early levels. All martial classes do better out of the gate than spellcasters. Its a known issue with DnD, not just in 5e, but in multiple previous editions too. Funnily enough, compared to those older editions, 5e is the more balanced system.
But, it does seem like druids wildshapes aren't quite as hard hitting as they should be? their damage seems low, even for this level range, and at least one of them lacks the multiattack it should have, which halves its potential damage output.
