Is there any debate with regard to aerodynamic effects? If you take a nice, long, bolly electric gear with wheel pants...this is a fair amount of drag force begin imparted well below the cg? Does this create more of a need for positive incidence in the wing or up elevator for level flight...this could also have adverse drag effects when trying to yaw in level flight.

Also, and perhaps more importantly, what is the effect on vertical cg? If one particular airframe were equipped with a long fixed gear, then later fitted with retracts, would the fixed gear version show a stronger tendency to roll upright during knife edge flight? With the retracts in the up position, the vertical cg would/should be closer to the aerodynamic center of the fuse side (in knife edge flight).