Unfortunately this system is not robust enough to survive political upheavals and changes in space program philosophy.
The plan that Disney-Von Braun had was a constant conveyer-belt type of system, where the replacement and restocking flights would do a big figure-8
between both planets using an ion-drive and dock with an orbital system.
That way the speed could be higher. It wouldn't have to slow down and then orbit the planet(s).
With a single craft, if something went wrong it would be stuck. If the political climate on Earth changed, then they'd maybe decide not to send the
followup missions.
With the Disney-Von Braun plan, the multi-ship 'conveyor-belt' system would be in place and the initial investment already made. Since all the
modules are the same, they'd save on parts.
Amazing that this video was done in 1957. It's kind of sad how much the program seems to have stagnated from 1969 to present and the 2018 launch date
(?).
So, I'm wondering how they'd design the single man system.
Seems to me there'd be limited value in having just a one way trip - is it just to say Man got there?