Well I played warlock, was impressed.
Then had a wizard in my party
Next playthrough dumped the warlock for 2 wizards.
Can learn any spell from a scroll.
Plenty of spell slots.
Plus in EA unlimited rests.
Wizards are currently effective (and fun).

BG3 Modder: https://www.nexusmods.com/baldursgate3/users/55895062?tab=user+files