To be fair, I guess you could say the trade off is the maneuverability, directional control and large splash radius.
I think it would be cool if they updated the Eternal Warrior exotic helmet to give an overshield to Thundercrash as well. It would also be hilarious because the last thing the enemy would see is a derpy Easter Island face flying at them.
English
-
The blast radius is smaller than a Nova Warp blast. There is also no aerial blast radius whatsoever, so simply jumping as high as you can allows you to avoid it. Its also quite difficult to maneuver in small maps/areas, which is the majority of maps. Activating it in the open and flying towards a group is usually a death sentence.