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