@EdwardDLuffy A disk of fire would be fine, but I like the idea of the trailer version too. The current problem now is that you can just stay inside and not undergo any damage if the Fuse is alone or out of grenades of KC.
At least, the idea of an "exploding wall of fire from a center point" would allow to make a little damage, and much more if they decide to go though.
But the firewall is also too low, can be easily countered by Valk, Path, Octane, and Gibratar's dome protects against incoming shots so it loses all interest.
