Hello!
Personally i find the mod menu quite a bit disorienting, therefore i'd like to make some suggestions:
1) total conversions should have a separated drop down menu, and below should be shown only Xcomutil/Openxcom since i guess these are universally applicabile;
2) the user content mods/third party mod should apperar on top, or at the bottomo, right before/after the Xcomutil/Openxcom native options so that users may find more easily what they are searchin for.
In the second point obvoously there's not need to create a dropdown menu.
Attached is a screenshot, pretty indecent i know
but i hope you may get the idea
Edit: clarifications