We’ve just got SSO implemented and running smoothly - very happy so far! 
We are currently using the ‘sso override’ settings for user details and avatars. A small feature addition that we’d find really useful would be to able to specify an external URL to redirect users to to edit these attributes.
This would be especially useful for members who have signed up just to participate in the forum, who may not necessarily be aware that they can edit various different user settings both in the forum and in our other site.
In our implementation it would be a single URL to edit all 4 attributes, but I guess to be a universal approach it might be necessary to specify a url for each attribute.
Any thoughts on this?