Apply 2 Masters (spread) to a Single Page (tabloid)
There are currently no solutions that I am aware of to sync a Left and Right Master into a larger tabloid page size. This is different from simply using a parent relationship among several master pages. A larger page size (digital friendly) cannot be complied from smaller master pages (print friendly). The ability to apply multiple master pages or master page items as "zones" would probably be ideal as it would allow flexibility for more customization on different page sizes.