Before the Stasis rework, Renewal Grasps used to give you damage reduction for standing inside the Duskfield aoe, in addition to all the other various things your Stasis build was providing you, like DR from Whisper of Chains, healing from Rime, etc. Now that it only gives Frost Armour, a buff which you'll probably have up all the time anyways, it basically doesn't give you any benefit for standing in it anymore. Stasis barely got any help from the rework. The last thing it needs is nerfs.