Honestly I don't really understand a lot of the problems being presented here.
This is nothing like vampires- the 'youngest' term problems can very easily be changed to a different term.
Losing members of the hydra for no reason will never be advantageous. More people alive is more votes. And why give away that power, when you are guaranteed to get it later on anyway. This encourages clever sacrifices to gain an advantage.
Also 'having two kills is busted and they won't know who you are'
Well I mean. How does sk get found? Usually its by TI's and bad fake wills no the evil roles. My only problem is that as a NC role it should not really have the power to win that often. (as ToS has specified they ideally want 40% town win 40% maf win 20% neutral win) I feel in its current state it might be too powerful. Is a rampage attack considered more or less powerful than having 2 attacks? That is a possibility.