Shibboleth Developers

There seems to be rough agreement that the SOAP forwarding approach 
may be a little too forward-looking at this point. We should probably 
keep it in mind, and try to avoid making decisions that would prevent 
us, down the road, from supporting those scenarios. But, in the short 
term, this isn't a model that its in widespread deploy.

That said, we still have to agree on a model that we can use, in the 
short term, within a non-browser profile.

So, comments, thoughts on the three remaining alternatives?