Graphics are great as with Freerider, at this point, I would suggest to an investor or a few, a team of good programmers and take over the market from "RealFlight" , which is only capable of spewing out ugly windows-only graphics and mediocre physics simulation.
Then I see your flight controller calibration, NOT improved since previous version, and wonder who made that thing.
Each calibration , when instructions are followed, can end up with inverted pitch/roll, leading to another stupid calibration procedure, which may, or may not as well do the same.
For crying out loud, when the first screen asks user to roll left, then pitch down, - how do it manage to screw up that data so bad, that the circles on next screen go in wrong direction ? - and over, and over need manual correction of travel and center ?
you need only one screen of calibration:
1: ask user to center sticks , then press ok
2: ask user to mimic full throttle, low throttle , yaw right then left , and so on for roll and pitch. (visualize as axis are detected) - no need to add click between all, just look for data.
3: by now you have all the data needed, full travel, center, and channel assignment.
and *SAVE* the calibration data.