When selecting an assignee, the list is Me, and then all possible assignees sorted alphabetically. This is a useless list, and so I type in order to assign something. This is slow (especially if I'm assigning a bunch of comments in a doc, etc.)

If I'm working within a small team/project in a larger org, then I nearly always only assign to a small handful of people, and often I need to assign a few things in a row to one person. Having this list sorted by "most recently assigned" would save significant time in the long run.

Including recent multiple-assignee groups in the list would be a nice bonus.