Are these Nunu buffs good?

Base health regen lowered from 1.678 to 1.4 Base health lowered from 598.28 to 575 Visionary (P) [new effect] next spell cast is also now enhanced: "After 5 basic attacks, Nunu's next spell cast will cost no Mana and its effects will be upgraded to the next rank: Consume: +160 Damage and +50 Healing Blood Boil: +1% Movement Speed and +5% Attack Speed Ice Blast: +40 Damage and +5% Movement Speed Slow Absolute Zero: +250 Maximum Damage"

Source http://www.surrenderat20.net/2017/03/322-pbe-update.html

Especially given the nerfs to his base regen and starting health, I'm not entirely sure these are good changes. Or at least, they're a step in a good direction, but not enough. Especially with his ult; if the bonus damage is only when fully charged I don't think it'll ever get used.

Whoever's working on Nunu at the moment, you should consider other empowerments; like.. NEW effects, rather than just the same ability but better.