In what regard, design or battle?
Design is because of the bipedalism, which I think is because they wanted to make it look like a mountain peak, it looks much better when its on all fours, perhaps having bumps on it's back to give it the appearance of a mountain range when quadruped would have worked.
Battle? Well aside from Ice being Ice, it's a combination of a couple of issues that bring it down, it's stat spread isn't actually too bad after the Gen VII attack buff and it has a clear defined role with both Slush Rush and Swift Swim. The main issue is with a base 50 speed it's not going anywhere fast even with them so it just falls flat, if it just swapped that with it's base 70 Sp.Att it'd probably be significantly better, Ludicolo has a history of making Swift Swim work with base 70 speed. Other than that it's the fact that Hail is garbage so even if it WAS a good Slush Rush user it'd be the only damn one because they're ALL slow and it wouldn't be able to carry the weather enough to be worth using regardless. Might see a bit of Swift Swim use since it's Icicle Crash and Superpower is something unique to it as a swift swimmer.
