Did you cut off the fuselage nose and use the nose as a spinner? Just one layer of plywood for the firewall, any added reinforcement? Any thrust angle built in? Is the motor an inrunner or an outrunner with a reversed shaft, or? Did you mention motor size, prop, or battery size in the video? I had to listen with the sound off. It appears that the motor and battery reduce/replace nose ballast and that there is room for a sizeable battery, perhaps a 4 cell, in a compact configuration.
I would be reluctant to cut into the wings to add split flaps or ailerons but it would be nice to figure out what the existing rib structure looks like in order to contemplate modifications. I suppose it wouldn't be a big deal to remove the covering, take a look and then do a repair with matching Monokote, since the manufacturer supplies the color numbers.
Nice video. I think motor gliders are the coming trend in rc flying, with DL gliders right up there. Any method that eliminates the foam look on a plane adds tremendous value/appeal to the plane.
Tighknot