Cross-Class "Meta"morphosis?

[Than]

Think about it. We'd be losing Foresight, Skull Sunder, Fracture, Bloodbath, and Mercy Stroke. We'd be getting Assassinate in place of Mercy Stroke, and some other things I'm not sure of. I'm hoping for Goad, Perfect Dodge, Mutilate, and either Mug or Throwing Dagger.

I mean I only have Bloodbath on my bar because it's better than Keen Flurry but the whole idea of taking skills from giant axe wielding rage monsters never really made sense.