>>38436731Resists Ground.
Buff Freeze-Dry's Base Power to 75 and widen its distribution among Ice types.
Change Icicle Crash's statistics to match one of the other moves of its kind: Nerf its power and flinch chance slightly to compensate for perfect accuracy. 80BP/100%Acc/20%Flinch to match Waterfall, for example.
Give Aurora Veil to all Pokemon with Snow Warning.
While under Hail, Ice types receive neutral damage from Fire type attacks, and Fire types receive neutral damage from Ice-type attacks.
Just make new Ice types better, honestly. Make sure their stats, abilities, movepool, and possible dual-type are well-built enough to support their intended role of offense/defense/support. They don't need to be OU material, but they shouldn't all be drifting about in PU as they have been.