Currently under the effects of my third shot, so I'm a bit under the weather... anyway, here's something that I thought of a couple of days ago. My personal opinion on Abomasnow is mixed. I like Snover (except for the tip of its head), but Abomasnow always felt a little off, especially when put together in an evolutionary line with Snover. So, as always, my solution is a redesign! Snover didn't change much, but I like Yetree (yeti+tree) much more than Abomasnow. It would camouflage itself as a tree during the day and move together with Snover during the night. I'd make it much more difficult to obtain, like for example making Snover rarer and/or making it evolve through friendship, a higher level, or an item (tell me which one you'd prefer).

Statistically speaking, I boosted it up, keeping in mind that it wouldn't have a mega evolution:
HP 90
ATK 100
DEF 85
SAT 100
SDE 85
SPD 60
TOT 520
For its abilities, I'll have it keep Snow Warning, but make it have two extremely powerful abilities which will make it much stronger, especially against its biggest weakness (that being fire). As its second ability, I'd give it Ice Scales, practically doubling its Sp. Defense, and for its hidden ability, I'd give it Thick Fat, making its 4x weakness to fire more manageable. Since both these abilities are very strong, I'm willing to trade one of those with Slush Rush.

Let me know what you think of this redesign, and if you want to see more and of what pokemon~