An interesting observation from the Space X people is that powered recovery is best delayed until the very last moment, because every second spent decelerating or hovering is an extra 32 ft/sec/sec. That's why the boosters plummet and only light up at the very last moment (or not).
I wonder how this would compare with a parachute recovery system in an aircraft already equipped with electric VTOL? It's not clear that the 'G' would be any more than for a parachute arrival. The amount of residual, or even segregated battery capacity could be very small. And no pyrotechnics.
An interesting example of Lipo power is in Rocket Lab's Rutherford engine which flew to orbit recently from NZ. Instead of turbopumps, which in Saturn V famously had more horsepower than a Navy destroyer, they use reportedly 50HP motors driving dual impeller pumps for 8 minutes of powered flight. With multiple units, these numbers are quite similar to our own VTOL requirements.