Should Grasp Of The Undying get armor and MR scaling?

Well, folks since Courage of the Colossus got released a lot of champs with consistent CC have now become the top dogs of the game and more or less dominating everyone. However Grasp, while it had it's moment, has become utterly useless, seriously. every 4 seconds you get back 1.5 of your HP mitigated by MR back which would be around 50 or less after you have done the math. that is bullshit. but the problem is that buffing this once epic badboy would mean that those that don't need it would take it anyways such assassins and such.

So which defensive stats to they not stack? Resistances. Make it so that you deal 2% of your Max HP in damage and gain 3% back but for increase the bonus by 50% per 100 armor and MR I.e if you have 50 armor and MR you will get 6% of your HP back and so on. that way pure tanks get the most benefit's as they not only have high HP but they are rewarded with getting resistances with the hypothetical grasp instead of any bruisers that build a lot of HP who then get to abuse the %hp gained from it. and if it becomes too much then a cap could then be placed on it, as to not make it too OP for any jugs out their.

Sounds good?