I feel like the game combat doesn't really do well with a "classic D&D party" (Fighter, Mage, Cleric, Rogue) setup, but my Warlock/Warlock/Cleric/Rogue which is all about versatility, maneuverability and massive damage is really fun to play. Probably because they're more grafting D&D onto the Divinity engine rather than the other way around, so the D:OS2 gameplay style is a lot more satisfying than approaching it as a D&D game
Also, what's the point of all the deep character customization / build system if we use the cookie cutter classic party setup? If's fun to come up with a party using a unique playstyle, and keep replaying the game until I run out of gameplay changing ideas. On that note, I hope to see more companion customization. Again, D:OS 2 did a brilliant move by decoupling the origin character's story from they tactical aspects. (By letting you pick a skillset AKA preset they would focus on.) I understand that locking down the general archetype of each companion makes sense because of their story in BG3. Still, I'd love to be able to respec them / grow them in wildly different directions in subsequent playthoughs.