Hey buddy, thanks for playing! Sorry for not getting back to you earlier, I was overseas and away from my computer.
The reason why those planes aren't playable at the moment is because their 3D models don't have moving control surfaces. That is, they're just a solid block, so I can't animate them properly. Since I don't know how to use blender or anything, I have to try my luck with whatever models I can get my hands on legally.
More aircraft are coming in the next patch, though!