Yeah, IMO Pilotwings is the closest thing to a killer app for the 3DS launch. The other day I got the original Pilotwings on VC and the nostalgia was powerful. It was never exactly one of my favorite games but it was one of the first I got for the SNES and I probably haven't played it since 1991. I never bought Pilotwings 64, I borrowed it from a co-worker for a few days back when the N64 launched. Would be very fun to play it again now.
Caution - You are approaching the periphery shield of Vortex Four