It would be great if GnuCash would support high DPI screens. For example, my 13.3" laptop has a screen resolution of 3200x1800 and several elements of GnuCash's UI are close to invisible. This is a significant issue for many users, especially as screen DPIs continue to climb.

Gnome applications (I run Gnome shell on wayland) appear to scale very well. This gives me hope that high DPI issues in GnuCash can be addressed easily.