I also have a 43" 4K monitor, and I find myself being in the same position as you. The left/right edges are difficult to see. I don't have the issue with the mo

I also have a 43" 4K monitor, and I find myself being in the same position as you. The left/right edges are difficult to see. I don't have the issue with the mouse, but I also doubt whether a larger screen would be useful to me. As it is there's a corner that gets unused because it's just out of "eye shot" if that's a phrase. It is now, I guess :D