This isn't and never has been an air combat simmulator. Show me a quote from the HTC staff or the website that explicitly says that it is an air combat simmulator. Not that aerial combat will be the primary focus, but that this game is an 'Air Combat Simulator'.
Point being that you can't use the "well we need it for its historical significance, for EW and scenarios, and nothing else really matches it for a substitution in Special Events
" rationale for why ki-43 should be the next addition when there are other more needed additons (based on those criterion), particularly in the EW GV lineup.
You want the Ki-43? Fine, but don't use the "well its needed for EW" reasoning if you don't want me to raise perfectly valid and legitimate arguments against it, or for other additions ahead of it.