Ouch, I've seen this happen before.
Look it sucks but DnD will never be DOS. Larian made a choice going with this license and they are sticking pretty closely to it. I suspect some customization will open up as early access drags on but they will never get close to DOS. Why do I say that with such confidence? Again it's the license, there is a horde of die hard DnD lovers that are beyond excited about the ruleset being adapted well in this game. Personally I'm lucky, I enjoy both DOS and DnD/Pathfinder based systems. There are things to enjoy in both worlds.
I recommend reading up on DnD, there is some flexibility in the system for multiclassing etc but again whatever happens through early access it's never gonna become DOS.
I agree with the rest of the comments and hope they make those improvements.
