I think if we're going to argue about this, then both of us should be working under the same assumptions. My post was working off of the OP's original proposal, which was just to allow Surecast to apply to movement-interrupting in addition to attack-interrupting. The end result isn't just another flavor of swiftcast because it's both a separate cooldown and you still have to deal with the casting time.

But regardless, this is a non-linear problem. It doesn't have to stay exactly how it currently is without changes. There are numerous possibilities besides simply replacing the ability with something else, which I'd only suggest if this thread were about doing such a thing. As it is, the thread provokes us to think of ways to improve it instead.

Your assertion that it's an ability that rewards skill poorly is a valid one. If that is your primary concern, then what would you do to fix this problem, assuming that removing it or changing it to another ability entirely isn't an option?

Not asking for answers, but ideas. Why? Because ideas are fun.