I think my necklace of dispelling idea would serve this purpose perfectly if it were to be added. Lol
I agree completely, However I would rather something to combat the ring itself than the ring be made to be useless.
Half the battle for PvP in my eyes is the preparation, If you choose to bring an ice ring, And the enemy has something that disables the ice ring's ability, Then they out prepared you. However, If you decide against using the item which combats it, And someone uses an ice ring, Then you are at a disadvantage.