Invert colours used for the HUD Layout screen + Snap vertex/Increase move speed
Now this may only be an issue for me because I'm a PS4 player, but if I'm going to be playing my game without a grey layer over my screen, what makes you think that putting a grey layer over the HUD Layout interface makes it any better for me when it comes to adjusting where my hotbars and UI elements are?
A simple solution to this problem would be to have a grey mesh grid over a clear screen so that people can reposition their stuff properly, as opposed to a barely legible black mesh over a grey filter. Also for the snap-to-edges function on the HUD Layout menu, you could have a tiny diamond over the selected edge of a square in the grid if people want to use the snap function and an option to disable snap-to-edges when repositioning hotbars, similiar in concept to the way housing placement runs currently with the grid snap there.
And finally, I am so tired of how slow it is to readjust HUD elements when you can only use the directional D-pad on the PS4 dualshock controllers. Surely something can be done to have a faster adjustment rate with the left or right analog sticks? I seriously don't see the reason why my analog sticks still control my character's movement and camera angle when I'm in such a crucial menu.