I agree. The world of documents is going to evolve and since W3C is a committee type beast, there is a reasonable probability that as the years go by we are go

I agree. The world of documents is going to evolve and since W3C is a committee type beast, there is a reasonable probability that as the years go by we are going to end up with a horrible number of elements. HTML is going to look like the Java API. Perhaps this proposal could open up "structure" plugins that could be developed independently of the browsers themselves and certainly independent of W3C.