I spoke again with Cástor today by phone.
He is interested in testing the BoB's Su-26, as he can judge if extreme maneuvers match reality.
But he has no hardware to test it; I mean an updated Pc, controls, Track IR...
So there's another suggestion from the spanish community; there's a massive simulation event in Madrid soon, so Castor and Juan are invited to go there (easy, they live in Madrid) and test BoB (if available then) in any updated Pc.
More than a beta-testing, it would be an intense day or weekend of focused testings...
To get an idea of what Castor and Juan do when they fly aerobatics alone (not in formation), some short videos:
-Cástor painting letters in the sky and extreme maneuvering in an airshow at Barcelona:
-Juan making a torque roll vertical maneuver, hanging on the propeller:
-Cástor starting an awesome low pass with a rudder slide and finishing in a knife edge:
-Juan making a perfect hammerhead:
But the most spectacular maneuver is the next one. Cástor used to make a maneuver that looks like the Su-27's "Pugachev Cobra"... but on takeoff!!!
See the end of this video of him for that "Cástor's Cobra":
Maybe other pilots also do it in aerobatic planes, but Castor is the only one I know that made this.
So all this to say that aerobatic pilots are interested in BoB, like virtual pilots are interested on real aerobatics... Here is an open door to make things together