It would be a tad more balanced by removing the FW190D or adding the
109k4/P-51D/LA7/Yak9u/Typh/Spit16 (or 14). (The fastest thing UK has is the spit9) The nearest competitor to the D9 is the 51b (guns?).
The map.... meh.... quite the flight time for the normal arena nbrs. Might take the fights higher, which in itself isn't always a bad thing.
The 3-way setup? meh... might work, but I forsee very low IJN use.
The Eny? <--- my bad for not reading carefully.. eny disabled, so ignore this.
We'll bear with this "experiment" I guess. <--- this still stands.