Sea Fury FB11 should have it’s airspawn because it fulfills the same characteristics of other planes that already have airspawn: Poor climb rate, bad maneuverability and overall straight line speed advantage. Poor Sea Fury still gets outperformed by these even the “very bad Do335 B2” that turns inside Corsairs. To add more information; the sea fury FB11 stands for “Fighter Bomber 11”
An Airspawn would make the sea fury somewhat more playable, or more do335 fodder than it already was. The Sea fury does not fit the meta of the game for how little power it has. The Sea Fury is u n p l a y a b l e.