Weston does multi-DPI really well. When you drag a window between monitors, the half on the HiDPI monitor is scaled and the half on the LoDPI monitor is unscale

Weston does multi-DPI really well. When you drag a window between monitors, the half on the HiDPI monitor is scaled and the half on the LoDPI monitor is unscaled. So it looks perfect without windows growing or shrinking when you move them to another monitor like GNOME on wayland.