Just found an menu application that is designed to work with x11/tint2 and x11/menu-cache. I think an x11/jgmenu port would add flexibility for those use lightweight WMs.
https://github.com/johanmalm/jgmenu It is active and has been adapted by BunsenLabs (continuation of CrunchBang). Upstream mentions he has built in OpenBSD. With x11/menu-cache, and x11/openbox pipe menus, it would provide freedesktop menu integration and do away with manual edits. I submitted a howto on DaemonForums that results in a lightweight desktop. A bare framework of applications is provided in part to provide placeholders in the menu structure. Use of jgmenu would allow a user to start with a largely empty menus and easily customize their build by adding xdg compliant ports. It also could provide a "start" tint2 button to launch a menu, LXDE/MATE/KDE/LXQt style. -- J. Scott Heppler