I probably posted a similar post in a different thread, and I fully support this, all DOS1&2 fans expected the couch-coop experience to be as outstanding as it was in DOS1&2.
Here with this implementation, it is a major letdown, to me it is game-breaking as it ruins my gameplay completely, I cannot see anything, and constantly have to rotate left and right to see what's there, as there is just not enough view.
I agree, unified screen during combat could be a progress in the right direction, but why not make it exactly the same as in DOS1&2?
The system was very flexible and useful, it allowed couch coop players to utilize the whole screen, instead of just a half!
Another suggestion would be to get rid of the radial menus, or at least, if there is some kind of a console convention to implement the menus in that way, unknown to me, give the players a switch in the options section, to be able to switch between the PC-style UI, and colorful radial ui.