Having played both Warlock and Titan quite a bit I don't see the problem with WoD being destroyed by another super, it's all circumstantial. If no one on the other team has a super up to counter WoD it lasts the full duration and provides a hell of a nice buff for that point you're trying to control. However, if I see a warlock coming I'm going to get ready to run the hell out of there before he uses his super, I'm not just going to stand there with my thumb up my ass and die. The current state is fine, nothing should change, just play smarter.