I have a consideration to make.
the harrier, being a new plane, has the attention of most pilots, causing most of them to migrate to the blue coalition, unbalancing the disposition of the clients on the server.
In my opinion, as long as the module is not fully functional, it would be better not to make it available ... but I realize that being the novelty, there would be no interest in the blue flag in case it is not implemented.
I therefore propose to add the Harrier to the red too.
my 2 cents