I don't think there should be a dispel or reduce speed mod set, however a splash damage mod set would be cool. Imagine splash damage on Chewbacca/raid han. I also like ignore protection mods, but then Nest would be worthless, so that won't happen. Health steal and counter chance I think would be alright, and not game breaking. Stun chance would have to be very low (~10%) or it could actually be gamebreaking. Good ideas though, would definately like to play in arena without that desperate need for speed.