U gotta wait until u see how Thunderstorm really works, in case u havent experienced it. The way i hope it will be, is a tool to get ur targets on air ready to be killed by u.
If u cant shoot ppl in mid air, what can they do about it? U wont have an instant attack, but maybe u'll have time to start a series of LB+LB+CL ? lol gotta test it first. These aoe knockback talents also tell me that, maybe melees will be a pain in the ass, specially the rogue.