Create a setting to always open Office files in app instead of Teams
There should be a user setting that enables users to chose to always edit Office files in their respective application instead of in Teams.
This will save a click for when staff need to collaborate on an advanced spreadsheet or they have a Word document that doesn't render quite right in the Teams app. Generally speaking, unless it is a really quick edit, I prefer to open the full O365 app to edit files and staff feedback echoes that sentiment. Saving extra clicks with that one setting would save some frustration and improve QOL.