Now see I get some of what you are saying, but I don't think it's because he wants to stay on schedule or keep to the 10 books total thing. I think it has much more to do with the constraints of keeping each book to a reasonable physical size. Because realistically speaking they can only be so big and they're already pushing that limit, like I think I read somewhere that their manufacturer was worried about being able to print/bind a book with so many pages correctly. This leaves him with the choice of cutting things, making a book that is too big for a lot of people (physically not mentally) or splitting up books by character and writing about what one group is doing in one book and what another group is doing in a separate book with the events of both taking place at the same chronological time ala GRRM; and personally I hate when authors do that. I mean maybe some people prefer that but to me it sucks, especially if the series isn't yet completed it makes it harder to follow and I almost inevitably enjoy whichever one comes out second less, no matter how good it is. I mean I get it I would love more of those scenes too (and if he ever releases them as extras or something I'll be over them *hint hint*) but not at the cost of keeping the books in chronological order sans flashbacks.
I will however give you points 4&5. It would have been awesome to see Jasnah vs skybreakers and we really should have gotten to see more of what the dustbringers were up to. But I wouldn't be so quick to write off the importance of Emul just yet .
