@fgladitz welcome to the forum!
This gets my vote, because that's how we all have our calendars set up at work in our groupware - showing one work week when we check the calendar, some showing details of a selected event at the bottom (kind of lile email: list on top, preview at the bottom).
Also in the panel this would help to just not show days without appointments.
Preferably it would be relatively simple to toggle weekends on and off quickly without having to go too deep into the general settings both in the panel as well as in the calendar tab.