I completely agree with you, I think the former is much more useful. I assume there isn’t a huge reason it couldn’t be done that way, or at least have the option to do both, sort of like how you can (on most systems at least, not Haiku yet) mirror dual screens or have each be their own screen. As noted I’ve wanted to look at this for a while so I’ll play with it. Someone else here (like @waddlesplash) might know more of the details though.