Can we make Rengar's Bonetooth passive a little more interactive?

So, the concept behind Rengar's new passive was to make the game more like a hunt, tracking down each target until you kill everyone (gotta catch'em all) - sort of "The Most Dangerous Game" style.

It really seems like in such a hunt, the prey should be able to fight back in some way. Right now, get killed once by Rengar, and there's no coming back. There is no way to fight his passive except to not die.

Can we make it so that, if you kill Rengar after he kills you, your stack is removed from his Bonetooth Necklace? Only for kills, not if you get an assist on him. Why would Rengar still get rewarded for getting beaten by am opponent?

This gives opponents a way to curb Rengar's snowballing, but still gives him the advantage (you have to let everyone kill him without dying again in order to crush him - which isn't going to happen). 5 stack Rengar gets really out of hand and is very difficult to handle.

I don't think it would ever happen, but players who kill Rengar could also get a single stack of Bonetooth Necklace - so everyone is basically trading with Rengar. Kill him and get rewarded, or get killed and see him snowball.