Agreed! Markup-as-content-backbone is one of many things HTML/CSS do extremely well, and I agree not building around something like this was a major weakness of Flash.
Silverlight sought to do this with XAML, but it had other problems (required a plugin right as plugins were on their way out; CLR was a huge dependency; too locked down and proprietary under Ballmer leadership)
Can you imagine a text-first content representation, which is visually editable with the UX of a vector design tool? This is the rabbit hole that drives our work on Pax.
Silverlight sought to do this with XAML, but it had other problems (required a plugin right as plugins were on their way out; CLR was a huge dependency; too locked down and proprietary under Ballmer leadership)
Can you imagine a text-first content representation, which is visually editable with the UX of a vector design tool? This is the rabbit hole that drives our work on Pax.