The one I'm desperately waiting for is serverless restaurants—food halls already do it but I want it everywhere. Just let me sit down, put an order into the kitchen, pick it up myself. I promise I can walk 20 feet and fill my own drink cup.
Call it what you like but replacing the work of humans one for one is difficult and usually not necessary. Reformulating the problem to one that machines can solve is basically the whole game. You don't need a robot front desk worker to greet you, you just need a tablet to do your check in.
[edit] Aldi did automate the management of getting shoppers to do that work, because there’s not a person standing there taking and handing out quarters, but (very simple) machines. Without those machines they might need a person, so that hypothetical role (the existence of which might make the whole scheme uneconomical) is automated. But they didn’t automate cart return, all that work’s still being done by people.
Like checking in at the airport via kiosk/app for example. Do you consider that to be "doing the work" of the desk clerk? Or say ordering at a restaurant by scanning a QR code, in both cases I have to look at the menu, decide what I want, and input my order into a system. But with the QR code there's no longer a human necessary.
And I think the entire mid and low range restaurants could replace servers with a tablet and people would be happier. I'm not sure how it doesn't make more money for the restaurant too, making it so easy to order more during a meal.
But it's good if both are available, as apparently there will be customers for both.