rengar should be punished for failing to catch his prey

If rengar uses his ult to jump on you and you make it back to base or something without dying you should get a prize or something.

When the hunter fails the prey wins and dammit I want to feel like a winner when I survive a rengar gank! In fact, let me have a bone tooth buff if I can get 50% of his remaining hp before escaping lol!

edit

also i'd like to point out that I don't really feel bad about him bursting champions fairly well. Whatever. But I want a prize if I survive, actually all assassins should be like this I think. Lets raise the stakes please.