my idea is to use mag lev vertically to launch people straight into the air.
because acceleration can be dialed in and controlled so closely with mag lev the forces experienced by the "jumper" would be reduced, but the top speed reached by the mag lev system would be very high.
also, mag lev can be stopped very quickly but without conflicting forces that would put the "jumper" into a spin/flip.
just imagine that human catapult thing on Richie Rich, but make it go straight up, and use the same system that those super fast trains in japan use.
it could even be housed in a hotel elevator shaft, or something like that.