Are nidbanes designed to be a tool of warring pvp factions or a deterrent against senseless murder against noobs? If it's the first great the change works great. If it's the second it fails horribly. A noob/ hermit would have absolutely no benefit from getting rage. He won't be killing his killer anyway nibdanes or not and more than likely he'll quit anyway. As for the lp spent it means nothing for combat alts who already get it and quite a bit to a hermit that has to spread his lp to every skill of which you added 2 more this world.
My suggestion is change it to a new skill that only does that so it's fair to every character combat alt or not.