[Roonerelli]

WCF made the mistake of trying to be all the things to all the people

The abstraction is simply broken

It tried to be a common abstraction over http, tcp, message queue etc. Which is just not possible

There's too many specifics in each of them to have any sort of common interface (in all but the most simple examples)

[Yuioup]

Maybe now is the chance to fix it?

[plorkyeran]

You can't meaningfully fix something when the problem is that the core concept is flawed.