I think the Nunu buffs are kind of in the wrong direction
I like the buff to his base AD, but increasing his Q healing is just unnecessary. This spell already heals so much mid-lategame, it's amazing. You know what part of Nunu is actually unreasonably weak? His E damage. It's a short range semi-skillshot that deals damage over a couple of seconds, it should be doing more total damage than it currently does. Maxing it second feels terrible because there's almost no increase in damage.