BRS type systems are still attractive for gliders. We've had quite a
few crashes in which pilots were not able to get out of gliders, but
perhaps could have pushed a button.

For gliders, the Streifender system is probably the most relevant.

http://www.streifly.de/gesamtrettungssystem-e.htm

It seems to be legal and all. What happened? Is it simply that most
poeple are putting the motor where it should go?

John Cochrane