Yeah its a waste, you either stay with level 1s or go for level 3s. Its too easily avoidable and very short in duration.
I haven't checked myself, but you can probably combo into it. Most of the kills I've gotten have been from the moment that I activate it while my opponent is in a punishable move. Then you get to try for a 2nd kill when they respawn. Chasing down the opponents is rarely successful, but it's something.
and that is why I said, it's the only super that need some skill to make it worth, just like all the other lvl 2.
think about it, all the other character need to wait the right moment to use their level 2, they can not use them whenever they want. --- this guy don't speak english!!