Take any WS-<star> specification, and you can probably find one or more ad-hoc proposals for adding similar features for RESTful protocols. For example, AtomPub is adding a mechanism that is almost exactly like SOAP-with-attachments, but more limited. The various HTTP message signing mechanisms like those found in Amazon's web services or the one in OAuth (and OpenID? I forget if there is a different one for that) are analogous to the various WS-Security stuff. As another example, I've seen a couple RESTful protocols that tried to define something like a simpler WS-Policy.
I don't think that the WS-<star> stuff is that great either; a lot of it is really complex. But, WS-<star> stuff is all decomposed in ways that make it relatively simple to combine just the parts you need together. SOAP 1.2 isn't complicated at all. WS-Policy and WS-Security and other stuff is more complicated than it needs to be, but it isn't so complicated that it needs to be totally redone anew. And, a lot of it can be (and is) subsetted pretty easily.
Take any WS-<star> specification, and you can probably find one or more ad-hoc proposals for adding similar features for RESTful protocols. For example, AtomPub is adding a mechanism that is almost exactly like SOAP-with-attachments, but more limited. The various HTTP message signing mechanisms like those found in Amazon's web services or the one in OAuth (and OpenID? I forget if there is a different one for that) are analogous to the various WS-Security stuff. As another example, I've seen a couple RESTful protocols that tried to define something like a simpler WS-Policy.
I don't think that the WS-<star> stuff is that great either; a lot of it is really complex. But, WS-<star> stuff is all decomposed in ways that make it relatively simple to combine just the parts you need together. SOAP 1.2 isn't complicated at all. WS-Policy and WS-Security and other stuff is more complicated than it needs to be, but it isn't so complicated that it needs to be totally redone anew. And, a lot of it can be (and is) subsetted pretty easily.