Scott and all, this is what I believe will happen as well. Chis W. has posted that we get a very large group of non-wikitreer's who access our site. This change appears to force anyone, WikiTreer or not to register to see the information. Maybe this is not a big deal but definitely another obstacle.
I have experienced this elsewhere, where you will be required to login and then the login does not take you to the actual link, then you have to go back an reclick the link after you have logged in.
We may have to wait and see how it actually works.