I don't get it? BG3 uses 5E ruleset, character creator gives you good default ability scores, and level up steers you towards single-classing. Your average Tav naturally develops into a powerhouse in the gameworld.
Sure, you you can powergame around the edges, but what more power can you really eek out?
Personally, I'll fiddle with ability scores a bit. I'll pick to learn more useful spells first. I'll use a couple of weapons to use more weapon benefits per short rest. Big whoopdedoo.
For all that effort, I'll be slightly ahead of the curve compared to Joe Bloggs' Tav, who in turn is probably an hour ahead of me in game play - and already found the Vorpal sword+3.
Seems to me it's more a case of how quickly you want to have that steak, savour the flavour or wolf it down?