League of Legends (LoL) Question: Glacier

Glacial Augment on Neeko is actually not as bad as it might seem. It offers a cheaper build path than the normal AP build and landing your R is much easier.
Youtuber Redmercy plays some Glacial Neeko sometimes. He plays her mid though but still. Might be even better as support.

Neeko support is super good. Her root gives her some insane kill pressure in lane, and she can play mind tricks by looking like her ADC.

I'm not sure what you mean by "glacier". You mean Glacial Augment? That sounds terrible. Pretty sure you'd play her with Arcane Comet, Electrocute or Aftershock.