Light rail takes decades of bureaucratic wrangling before the first passenger ride, requires a large footprint of valuable urban space, accelerates orders of magnitude more steel than flesh and generally costs a lot of money to build and operate.
All these issues could be greatly reduced using ski lifts in LA and other cities with temperate climates.
There wouldn't be many amentites -- maybe a hook to hang baggage -- but consider the even more minimalist original idea that came in a dream:
The passengers would just grab onto and hang from a bar dangling from a moving cable. If one arm got sore they could switch to the other arm. If they got to the point where they couldn't hang on any longer they would just drop off, maybe in the middle of an intersection.
Bret Cahill