[OpenID] XRDS multi-OP listing?

[SitG Admin]

>It would be better to say "I'd like OP1, but only for PCs, and OP2 
>for iPhones, ..." all somehow expressed in the XRDS file so the RP 
>could do the redirect to the right OP based on which device I'm 
>using, all while using the same identifier.

On a related note, I'd like it if the XRDS file could (optionally) 
have multiple OP's identified in such a way that the RP *should* take 
its cue to (if offering that feature) ask the user which OP they want 
to use rather than redirecting them right away. I'm not sure but I 
*think* XRDS would be the right place to start with this; the idea 
being that, if I had an OP that used one-time-only passwords for 
authentication, I'd want to save those pre-readied passwords for the 
situations when I *really* wanted them, and otherwise use a "weaker" 
OP.

I could also exert some control over my privacy by electing to use 
OP#1 for my work-related logins, OP#2 for my personal logins, OP#3 
for my recreational logins, OP#4 for sites I wasn't sure about yet, 
and so on. Any visitor to my site could determine which OP's were 
*possible*, but would have no guarantee that I actually *used* any 
particular one of them, and compromising the data stored by any 
single OP would not yield *all* my online activities.

-Shade