As discussed many many many times the Harrier and mirage are both having an overhaul which will be done by the coders and the texture artists.
The texture team are NOT coders and will be updating the model textures separate from our coders, unless your wish the texture artists to stop all work and spend the next 3 years learning code which im Guessing not ;)
So please cut the team some slack, we ARE working on the Harrier and mirage as mentioned, the coders are working on Harrier and mirage right now.
In regards to the list of missing features and improvements, I am working on this list and will share when I am ready so please be Patient.
I'm not going to rush it, I would rather do it correctly.