I really do think there is a lot of mileage in the future regarding BRS as I do think they will replace the " Other" engine. Obviously not as a second source of energy if the one packs up but as another option if that engine quits at night, over water or low cloud or even if the pilot looses the plot.
Pace. That's a view I haven't considered (probably due to my age). I am sure if you balanced the times when a BRS could not replace a second engine against the times when an out of practice pilot mis-handles an engine out, the maybe BRS wins. Thanks for that post.