Hello,
I really hoped this was going to get added for the PS5 release. I bought the game anyway because me and my SO enjoy Larian games immensely but I really, really wish we could merge screens. Not only in combat but while exploring the world as well. Both Divinity games had this...
In combat, it helps making plans together when we can see the battlefield on fullscreen and coordinate our attacks properly. During exploration, it helps with immersion. The FOV limits of split screen are the enemy of immersion tbh but it was always saved by the merge function in the previous games that let us merge it every now and then and enjoy the view.
I know there is probably a technical reason why this well-received and popular function hasn't made a comeback in BG3 but a man can dream...