I need to learn how to install mods…
I don't necessarily have the same idea of fun as you, but we (and many people in this thread I suspect) are both hoping for a robust modding system. I'll admit, I'm a bit nervous with how cumbersome I've heard DOS2 is to mod. Larian isn't Bethesda in that sense with giving a creation kit designed to make modding relatively simple and easy, with also powerful possibilities.
As for what 'playing BG3 the way I wish I could', for me, I'm at a point in my life where I don't play most video games for the challenge. I enjoy killing things, having a good story, getting good loot, exploring and learning about the world, all without having to min/max my characters. That's part of why WotR was so frustrating for me. They did SO much right with the mythic paths. I got so pumped listening to those awesome narrative sections around the different paths, but the combat was just so hard for me in an already really crunchy rule system. It wasn't even really a matter of difficulty, everything was just too complicated for me. Being able to land on a decent build by accident is almost impossible in WotR (at least for me). So I'm stuck either spending tens of hours rebuilding characters, having a terrible build, or just copying someone else's build.
If I'm able to choose a playstyle and through options/mods, get through the content with little frustration, then that's really all I 'need' I guess. Obviously there are lots of nitpicks I have, but we've been over all of those ad nauseam at this point.