I have a bunch of little submenus on a site I've inherited and their ordering is pretty random. I know there has been research showing adaptive menu ordering is confusing/frustrating and that a consistent order is better, but I was wondering if I should order the elements based on assumed frequency of use, or order them simply alphabetically.
Since this is an intranet app we can mostly assume which options are used most frequently (some are used daily, some are used less than once a week), but there are different types of users and we plan to expand the site further, so I was thinking alphabetical order would allow consistency for everyone.
Is there any research on ordering of menus related to this? I have to assume a Fitt's Law test would show the frequency of use ordering would result in faster finding of commonly used elements, but that method is less adaptable to change and less logical at first glance.