Currently, when you try to use Segment Builder all of the drop downs are not in alphabetical order. It would be great to have that ability so that you are able to find what you are looking for quicker.
I'm still trying to figure out the best way to display segment options in a logical manner. As you've noticed too, some of the segment options are grouped logically together (Opens, Opened, Did Not Open, In List, Not in List, etc.) Grouping in alphabetical order removes this association between segment rules that are logically associated.
Vice President - Product Management
Maropost Marketing Cloud