So she pretty much looks like Olaf's wife-y...or you know one of those colossal ice women from the Storm Peaks in WoW for you WoW players. I agree as a tank she should have more armor but the Riot artist apparently enjoys his pixels. Who knows maybe they will give us a more armored skin option.
As for the game-play I think she will be an annoyance especially for squishy champs. Imagine if she had boots of swiftness, there will be no getting away.
I enjoy the lore so kudos to that, and poor Ashe.
Hmmm we shall see how she fares though, kinda seems like another Voli imo.