For Space Blueprints, we need to get the space key as a prefix in the names of almost all of the template pages. I see that you have $SPACE as a variable that can go into Page Titles, but $KEY does not appear to work in the same way for the space key.
Also, the Space Name, Space Key, and Description show up as placeholders in the management console, but aren't available in the individual pages to be used in pages (as they now show in Page Tree blueprints).