We have changed our navigation and switched to a mega-dropdown-menus. Now we had some discussion how to arrange/sort the subcategories inside the dropdown layer.
One opinion is that the user is searching for some kind of structure in the links and therefore the order has to be alphabetical to help the user to find his way to the content.
The other opinion is we have to sort the categories by the most wanted or by the most seasonal relevance so the user would have quick access to the relevant categories without searching the layer.
Should we choose a combination of both? Should we cluster categories by topic, put most-wanted clusters first, and sort the links inside the clusters alphabetically?