On the Kanban view, you can get Avatar Quick Links which allow you to quickly click on a team member and see just the tasks that are assigned to them.
This functionality doesn't exist on the calendar view, but would be incredibly useful when reviewing resource availability using the calendar to filter down teams and employees.
At the moment, you need to Click on the Assignee dropdown and type in the employees name (it doesn't seem to keep a list of all of the ones you use regularly there, only showing the last one or two).
If the calendar was able to use the same Avatar Quick Link functionality as the Kanban board where you click on the avatar to filter down by assignee, it would be incredibly useful.
Rovo suggested setting up Quick Filters, but Quick Filters are also not supported on the Calendar View. Rovo corrected itself when queried about this.