Let's wait and see.
I like the emotes, but I think it should be bottom dpad to bring up emote option wheel. Top three for weapon select. Then the y button should be space magic power no.2 I stead of both shoulder buttons. I think a button combo is just too much for something so heat of the moment.
My main concern with the D-pad in the E3 demo is that it would be far more useful if it was used to switch guns, I only say this because we will have 3 guns equipped at once and hitting a button to cycle through to that third gun could be somewhat annoying in intense situations. That being said if it remained the same it wouldn't be that big of a deal.