[Schuback]

Throwing this out there, I have shelved a similar web-based project that did this with Verilog designs, which lends itself more naturally to this struture imo. I stopped because I don't believe there's a big enough market for it. That, and I wasn't sure how to tackle the problem of thousands of I/Os in a visual format (would make things real hard to see).

[meemoo]

One method for dealing with this is what Pure Data does. You have a message component that can set a specific property of the next component.

    [innerHTML "hello"] -> [div]

[CmonDev]

I have seen about 3 game engines exploiting the idea lately. It's good for specific domains but not useful for general purpose stuff.