I'm not sure how abusive the GWF+SneakAttack combo really is, considering:
1) Nobody has a problem with GWF+Smite, which can get pretty substantial.
2) A Fighter 1/Rogue X is going to be perpetually 1/2 a die behind a straight rogue on sneak attack damage. Brutal 2 on a d6 adds about half a point of damage per die, so you are looking at being a Fighter 1/Rogue 5 before you break even on that lost die.
3) The Savage Attacker feat. WTF? If that thing's balanced, I'm not worried about anything a GWF guy can do.
I'd be inclined to allow at least d10 two-handed finesse weapons (e.g. katana as a finesse longsword) until they were demonstrated broken.
1) Nobody has a problem with GWF+Smite, which can get pretty substantial.
2) A Fighter 1/Rogue X is going to be perpetually 1/2 a die behind a straight rogue on sneak attack damage. Brutal 2 on a d6 adds about half a point of damage per die, so you are looking at being a Fighter 1/Rogue 5 before you break even on that lost die.
3) The Savage Attacker feat. WTF? If that thing's balanced, I'm not worried about anything a GWF guy can do.
I'd be inclined to allow at least d10 two-handed finesse weapons (e.g. katana as a finesse longsword) until they were demonstrated broken.