A proverbial can of worms
I think I'm in the same car you are kiwidude - its a bit more than I can take on right now.
I can see why tracking things per device is a pain. And in many cases overkill - just because you can doesn't mean you should. Makes me wonder about my approach - is giving the user the ability to create different sets of collections for different devices really needed. But if the functionality will get added by chaley, then I'll use it