I can't remember where, but I read an interesting piece pleading with apple to bring the 17" macbook pro back. If you think about it, it makes a lot of sense. The extra headroom for the keyboard means they can easily cozy the touch bar in above the normal function keys. The extra chassis means they can put a bigger battery in there. The extra screen size would be... well it would be awesome.
But that's all a bunch of dreamy tech fluff. Apple has it's sights set squarely on a customer that most certainly isn't using the product for professional purposes.