I wish they'd implemented a full tiled window manager. I'd really like to have at least 3 windows in the split view. At the very least, an option to stack top

I wish they'd implemented a full tiled window manager. I'd really like to have at least 3 windows in the split view. At the very least, an option to stack top and bottom instead of side by side would have been nice. Seems like they want it to be congruent with how it works in iOS 9 on the iPad, so I don't hold out any hope. Maybe someone will figure out how to hack it.