Linking two layouts together is an inefficient way of doing things, if what you're suggesting is using two "Layout" objects side by side and moving them adjacent to each other. Sure, it would provide a seamless transition, but you're left to manage the wrap between layouts manually.
Of course, I'm probably looking too far into things. If you're instead suggesting having a "transition zone" that jumps to another layout, that severely limits the creative process.
Perhaps a physics overhaul down the is the only thing that can make it right?