The Me262, Arado 234, Ta152 and 190D-9, 109G-10 represent the very best the LW had, in any reasonable numbers.
Trouble is, they have been in the sim for awhile, and the restless players ask "whats next" well, you have been spolied I think by these types, as the allies have with the P-51D, F4U-4, and Tempest, and now the SpitXIV as well.
There isnt anything else (within reason) for late 1945 types. AH needs to fill out the mid and early war sets now. Trouble is they are all slower types and for some folks, who only care about the MA, they dont have a lot of interest in them (BoB ac as an eg.).
I think AH has to expand beyond just an MA though, it needs to contunue with events as well, and maybe theater specific arenas beyond the CT in the future, but it needs the rest of the types filled out to do that:
He177
He111
Me410
Kate
Val
SBD
Ki-84
Personally I dont think an ac belongs in AH unless it saw at least three months service during the war, equipped at least an entire squadron or group, and saw combat at least once.