The only stasis thats still busted is the revenant hunter, shatter dive is the very last busted stasis ability in the game. Titans and warlocks are fairly balanced, if anything, they both need buffs because they sort of suck for a balanced class. Warlocks could use slightly better tracking and titans need a buff on their slide because there is just no reason to ever use them over light subclasses.
Stasis was great on Cauldron this weekend. Specifically glacier grenade. I pulled off a lot of revives or heavy pick up by simply blocking off the doors. That was reason enough for me to run it over a light class.
And honestly, i'd like to keep it that way. Stasis has no place in pvp. Let it stay and be great in PvE. That is the only place where it is fun, and should be fun.
Shadebinder and Behemoth don't need buffs for stasis subclass. If you know how to play them, they are still pretty strong.
Titan with slide and glacier is VERY strong in cqc but, unlike hunters, is harder to get to the crystals and perform the shatter on it. Warlocks is more about freezing and damage resistance (shadebinder with glacier for resist on a rift or bleak watcher for slowing targets) They are strong, and bleakwatcher is annoying, in their own way. people just don't use them because they are no longer overpowered like before OR still find them too cheasy.