Hi all, I'm trying to design a metro UI and I see that most of the apps use the navigation strategies like you show in the guidelines: totally hierarchical or totally flat system.
What I want to do is a mix of them: having a hub page widgets on it (summary of the sections). Within this hub page, if you click on one of the widgets, you go the part of the section page in the second level. Let me show you a mockup:

User can flick to go to the next or previous section or could go back to the hub page. My questions are: Can I do this? Can the UI design jeopardize the submission and approval for being in the Metro Store? Can we play mixing the navigation systems?
Thanks for your help.