What Nunu needs

I've been playing Nunu for quite awhile now, and I'm pretty happy with his q-w-e, but I feel that his ultimate isn't in the best place right now. I have a simple suggestion, that will improve Nunu quite alot, without changing to much: Absolute Zero (R) = Nunu still channels for 3 seconds, but now any enemy caught in absolute zero for 1.5 seconds suffers a debuff and takes moderate dmg, and extra dmg if inside the ability once the channel finishes How does this help? This actually rewards you for proper positioning, and mitigates the risk of channel interruption, or enemy flash / dashes. How many times do you channel for 2+ seconds, only to end up dealing no dmg on a last millisecond dash. I feel that there should be some reward when keeping an enemy in your ability for at least half its duration. In league of legends, 3 seconds can often decide a teamfight, and you're just sitting there, channelling, hoping no one interrupts you. If you feel this change in needed, or another buff to his ultimate, please post your idea and upvote. Who knows, riot might see this and take action. I complained alot about his q needing to do something extra then just true dmg and heal, and it happened. Either by coincidence, or Riot saw the huge number of posts. Who knows? I say your upvote matters.