So i have a 32x9 monitor. And display fusion is great with it. However
there is a feature I would like to see. The monitor comes with a program called DisplayWidget from asus which has a feature called multiframe, which IMO makes it a bit easier to move screens to different splits.

Whenever you grab a translucent window a tiny floaty window close to your mouse cursor with each split comes up and allows you to drop the window directly.

Another suggestion. So you know when you have the monitor split and you show the borders as lines?

For example lets say i have it split horizontally into 3

I would like the option if i drag my mouse right on the line that it would size the window across both splits that are touching that line.

so

[ A | B | C ]
if i put my mouse on the line between A and B it would show an animation indicating that the window will be sized across A and B

this could work for vertical splits as well