The Fighter.
Actually, I think the fighter is done rather well in BG3. It's probably the best implemented class. It lines up with 5e pretty well. Battle master could use a few more maneuvers, but overall well done. Oh, and Eldritch Knight needs Weapon Bond. I don't think they included it, if I recall correctly. Now that you can be disarmed, that would be an important special ability so an Eldritch Knight can easily retrieve their weapon.
The only thing they did to kinda nerf the fighter is that they gave different weapons different special maneuvers, so the Battle master isn't AS special because he/she is no longer the only one who can do special melee or ranged attack maneuvers. Still, they only made them 1/day abilities, so they aren't that OP.
Overall, I'm pretty happy with the fighter implementation. More subclasses would be all we need for this class - like Arcane Archer and Champion.
