Shaman currently has a guaranteed pounce on a bleeding target if she gets a guard break. This can result in at least 50 damage from a throw. Characters with similar healing attacks, i.e. Shugoki, can only guarantee these hit with a wall splat. I don't think it would be too much of a Nerf and would make playing against her more enjoyable.
Shaman has to get you to bleed first and you almost never get the bite in a gank situation. Shugoki success rate on that hug is pretty good compared to getting the bite.
Ask any shaman how often they actually get the bite without getting interrupted. Also if the new changes come in, that is getting a nerf