Every piece of gear I can find with a proc or an active ability that freezes mobs has this removed for the mythic version.
That makes me sad. Cold damage is already the red headed stepchild here (there’s no good cold set for melee NON NIGHTSHADE, and no cold/ice shield), and freeze partly helps me survive on my winter tactician I’m working on.
I think you should have left some freeze abilities or procs for mythic items 
It’s not just freeze. Most procs are removed from Mythic versions, and instead they often have skill specific bonuses. It’s the new direction of high level gear.
I was using Olexra’s Chill, Shard of Asterkarn and Chilling Grip of Hargarrad and ALL THREE had their buffs/procs removed.
I checked grimtools and a few items still have freeze, but the problem with replacing them with class bonuses is they really shoot from the hip- high level gear often has +skills for three different classes… yet the stats are just BARELY higher than the non-mythic versions, it makes me feel like the item is spreading itself out over 3 classes and costing itself stats. But we can only pick two :rolleyes:
oh well, I’ll have to find freeze elsewhere, just because I’m high level doesn’t mean I’m going to change how i want to play my toons.