i could be wrong, but for me a pro machine should have have a good mix of reliability and brute force. since i'm an apple user i can't ignore the design part. so for me the pro machines should offer these features in a well designed box.
innovation it's not always "adding something new", but this rumored bar seems to be just like this, a plus, something that you can live without and in most of the cases will not increase your productivity. a display just to show an tap the dock? put it under the main display or add a full touch display. a mini display to show notifications? iPads and iPhones don't have dedicated notifications leds and we are talking about adding an entire display AND removing a full row of keyboard keys to show some notifications?
in my 2011 macbook pro i miss just one thing: the numeric pad, but i do love the design of the keyboard, so whatever.
the rest (except for the gpu problems) is perfect, a beautiful design, a beautiful display (1920x1200 in 2011 was amazing, and still it is) a lot of connectivity, the possibility to upgrade by myself some of the internals, incredible battery life (still talking about 5 years ago). by the time none of the competitors was offering all of this. you could buy an HP portable workstation with included truck to transport it; but my 17" was too small for any backpacks or sleeves.
what I would love in a pro machine? improved trackpad would be awesome and will not steal space to other internals, a large multi touch trackpad with apple pencil support, and palm reject would be incredible useful FOR ME. but since the PRO market is a wider than my needs i think that a pro machines should not have improvements only addressed to one kind of professional, but must be a balanced and adaptive TOOL to improve the productivity. (remember the steve jobs quote about the human and the bike? what if the bike fits only for some of the humans?)
so, the oled touch bar, i can't see a true advantage in having that FOR THE MOMENT expect for karaoke, and i honestly would prefer that apple has worked 365 days in making the macbook pro more reliable instead of knowing that super paid designer has lost just even ONE day thinking where to put a black strip of glass on a mac and then they have thought it would be a good idea to remove a full row of keyboard keys to place it.
the true PRO market is going in another way, a lot of people are leaving the mac world since the competition is getting better, competitors has started to hire designers in their staff too, to make equilibrated machines with a good design. and the desktop workstations are getting cool too (not as coo as the nMP) but are more durable machines that you can upgrade by your self or with the producer help.
i fear that the apple PRO line is slowly becoming just a noun to define the price range and not a specific brach of users.
i really hope to be wrong, and i really hope that this rumor will stay just a rumor.
anyway in my dreamlist for the macbook pro:
-4k, 5k resolution
-display techs from 9,7 iPad pro, i really love that.
-14" 16" display
-bigger trackpad with pencil support, just dreaming.
-get rid of those legacy usb port, one mini display port and fill it up with usb C ports with thunderbolt 3 support.
-TB3, of course, with external gpu support.
-no dedicated gpu, too many hassles, let's put the best iris pro or something borrowed from the iPad line.
-touch id built in the trackpad (just dreaming again)
what i except from the new macbook pro announcement at wwdc (first expectation, lol)
-13, 15 inches retina display, with specs form the 9,7" iPad pro (the antiglare treatment is very good)
-thinner design thanks to the display improvements.
-same configurations as now for cpu+dgpu but with newer components of course, 32gb ram option
-2x usb type-c tb3 ports + 1xusb type-a port + 1xmini display port tb3 port
-new keyboard mechanism. dedicated touchid button
-more powerful same battery duration
-order today, shipping starts in july, little cheaper than the current generation
-price drop for the current generation still in store (-200$?) , goodbye non retina 13.
THREAD TWIST: waiting for (amd) A7 MBP thread. because f**k the only thing we assume as sure.