BTW as someone who spent most of his professional life as a language implementor, generally I favor high-level language solutions to programming problems.
In this case, though, my perception is that implementation of a practical scheme might be quite difficult, while the payoff for the kind of sites I am involved in would be rather low because they're just not that sophisticated when it comes to UI.
But as I mentioned above, handling state management for the GUI of a complex desktop application might have a much larger payoff.
Just IMO.
