Moving people from a A to B in space often requires a significant change in velocity, requiring propellant eating into the mass budget.
But most of this propellant is "wasted" in moving a fully facilitated spacecraft, not just the people aboard.
What if we got rid of the spacecraft? This is the concept of an orbital pogo stick. Cosmonauts can stay in their EVA suits for a couple of hours, fire up a minimal propulsion system, and check into a hotel at the other end.
How "minimal" is such a minimal propulsion system? It's a little rocket engine, tanks, some controls, restraints to
prevent passengers from flailing around in terror provide comfort during the flight. How much could it be?
These would be a baseline, but the use case is different. A surface launch is different from a transfer in space.
There has also been some technological advances in the 50 years since these were considered. (The LESS report has a VHF transponder at 25 pounds!)