Great news, Ryo.
One little bug fix you might want to look at is disappearing icon artwork.
When I add a link, gmenu intelligently looks to see if there is an associated icon png file and uses it. Unfortunately, if I go and edit the settings of the link file (e.g. file name or ram timings) it loses the icon art location and I have to manually browse to find it. It would be nice if the icon art just stayed there!