PS. If any retract manufacturer would get their act together and make just one model of retracts that would retract flush into the side of a fuselage and then make them in standard sizes (.20, ..40, .60, 1.20, etc.) I'd be a very happy guy.
I'm sure a lot of folks would like to have them. Nothing real fancy. Just pull up flush into the side. Maybe make them so the angle of the retracted wheel can be adjusted up to 10 degrees outward or something.