But, I digress. You were seeking a descriptive term for a group
of Legacys, perhaps one that characterizes the nature of their drivers
and passengers with different terms depending on mode of suspension (on
wheels or wings). I.E. A gaggle refers to a group of geese when they
are on the ground whilst a skein refers to the group in flight.
Perhaps a truancy of Legacys could
refer to those unpopulated ground groupings (parked together) only
because they have escaped their natural environment of flitting flight.
Then again, a promise of Legacys could
refer to more than one taxiing for eventual takeoff into their natural
environment of flitting flight.
Your lunacy of Legacys may be
quite apropos for describing a group in close formation flight.
Grayhawk
PS What about two Legacys? That concept was skipped in your
query.