In suggest we replace all trams to be Hop-On and all elevator replaced with paternoster elevator.

Fun, but not good for general use. Yes, I hung off the side a bit when I rode the one in SF. Very fun, but a modern low deck, level entry team works for more people.

Wow I wish Clem Jones hadn't come along and ruined our tram network. Apparently Brisbane would today have the 3rd largest tram network in the world if we'd kept it going at its peak: no additional new track laid. Instead he ripped it up and we have not one metre left, except when you occasionally see bits of it buried when they do road works...like when they expanded Gympie Rd from 6 to 8 lanes over the last year or so. Sigh.

As for hop-on trams, obviously not very accessible. If they had the ability to stop and put down a ramp for people who need it, it could be manageable, but realistically if we'd kept the track, they'd have needed to lower the floor of the trams and raise up the platforms to make for level (or at least near-level) boarding.

Walt Disney tried and failed to make People Movers a thing. That was the safest implementation of this idea.

Oh, this could also be a shitty design for a food ~~truck~~ tram - you order & then have to walk along it while waiting for your food :D

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Not the most accessible. Really cool in theory, or on a tourist service though.

I think they might still have their place, like only a few doing the most busy routes (and free or at least no manual ticketing to further ease the ease of use).

Like within old city centres, imagine as you are walking & one of these bad boys comes by, you just grab it ride for even just a smol distance & hop off in a convenient location & closer to your destination.

Such design doesn't have fixed stops, or rather the whole route is.

Definitely cool! However, people who have problems with their walking apparatus would lose out. All in all, not 100% based.