Re: People who know told me
phuzz wrote the inherently self-contradictory, "You'd be surprised... ...Not much..." <- :-)
"...it also give you complete freedom in orbital inclination, and launch times and locations."
I understand that launch location and orbital inclination, if optimised for fuel, are somewhat linked. The Saturn V famously used the "Roll Program" to tune the orbital inclination to match the Moon's.
Launch times would be impacted by weather, both the rocket's limits and now this added aircraft's limits. So it unfortunately remains lacking in "complete freedom". Perhaps they could move to a different airport the night before the storm (if that's even practical, what with having to prepare a rocket).