This idea does have some great potential as a teaching tool.
That the guy in the back seat can take it up, show the trainee a move, then hand over control and work with him till he gets it.
Also works nicely for anyone who has takeoff & landing problems.
Ultimately would love to see this enabled in both the Stearman, the T6 Texan, and perhaps the Rv8 for advanced ACM.
It would take some work to coad, and the "instructor" would need another switch, and light in cockpit. But overall I think the idea has merit.