Fully custom party. I love building characters mechanically and leveling them up in BG3. EA thoroughly burned me out on the companions, so I can’t wait to make my own party and venture forth.
Discovery. There’s nothing quite like exploring a new map in BG3. For of all of the map design’s quirks, they do keep me on my toes the first time around. It’ll be fun to finally poke around the full game to get that sense of awe and excitement.
There also something to be said for the systemic nature of the world. I like wandering patrols joining combat, the destructibilty of the environment, and a bunch of other spoilery details that emerge from how these systems interact. It can be broken for sure, but if the devs double down on polishing this, it could really help BG3 come alive.