I wouldn't mind a damage increase for the saber-briquets and shortswords (would be nice to stop glancing off spinning people).
A nerf for the bayonet I would be against though, the Devs purposely made it the best all round weapon to encourage people playing line-infantry. I think that was a good decision, though sometimes taken to the extreme IMO, and it should stay that way. Giving it "unbalanced" would make it pretty crap.