To be honest I am quite sceptical here. I don’t see this working “just like that”, also considering the huge amounts of data that would have to go back and forth, not to mention the issue of firewalls (depending how they would push back the data).
(edit): Let me put this differently… The Chrome API is the reason why we get access to these online contents. In other words: a web browser engine. Web browsers do not allow you to store local data, unless of course it’s a cookie.
So next to web data we’d also need other data streams to make this happen. And quite frankly, I don’t see that happening any time soon. For the simple reason that I know VP doesn’t utilize a data engine at this time which also allows for inter-peer connectivity. Right now it’s still all focused around SQLite.
Even so… with all due respect I don’t think the online parts can ever beat the classic. One of the main reasons I prefer using VP over Visio is because you don’t have to drag everything in but instead can also utilize the object browser. And that’s something I don’t expect to see with the online setup anytime soon.