[aur-general] Transition users from package x to package y (package x deprecated)

Hi guys, I maintain the multiload-ng AUR packages, in particular xfce4-plugin-multiload-ng-gtk2 and xfce4-plugin-multiload-ng-gtk3. After the recent Xfce 4.16 update the gtk2 version stopped building, so I would like to delete xfce4-plugin-multiload-ng-gtk2 and somehow migrate the users to xfce4-plugin-multiload-ng-gtk3 (which should be renamed to just xfce4-plugin-multiload-ng if possible). What are my options making the transition as smooth as possible? Thanks for any input and merry Christmas! Michael