I hate the ring too.
Frost mages already had good stuff in BC, I was baffled when I saw shattered barrier in WotLK, thinking "who the hell thought mages need another freeze that they have to do NOTHING to get it off? Frostbite is already lame as hell"
When I saw Ring of Frost in the Beta, I was only facepalming. So mages really needed ANOTHER slow, PLUS an AoE disable?
And don´t come with the ridiculous "well don´t stand in it noob lol!" where the hell should I stand when the mage is inside of it spamming frostbolts at me as a melee?
Things that have to change are
1. EVERYONE or at least the mage himself should be frozen when standing in it
2. The 10 sec freeze should ONLY occur after the 3 sec, after that entering the ring should only slow (witch is strong enough already)
3. The freeze shoud be on a DR with Roots