[Horatio9000]

Its easy to say that, but what form could it have taken? RPC? X11?

The adoption of simple REST style resources over SOAP, corba etc shows how useful the original "handle system + simple verbs" design really is.

[chrisco255]

I think, at a minimum, they would have needed support for something like HTML5 canvas. Then Flash would have never happened. HTML should probably should have been XML with a component centric model from the beginning. Modules from the start with JS. Scoped CSS...lots of things would have improved the web's position earlier...but you know, hindsight and all that.