This request has been made many times, e.g. this intercom conversation:
https://app.intercom.io/a/apps/p57suhg7/respond/inbox/conversation/11245082354

Based on email discussion with Sam, Dana, Fred (see below), let's make the following changes:

Cmd-R (Ctrl-R on Windows/Linux) should reload data only. No app refresh.

Behavior:

• always trigger a reload of the sidebar, and
• if the user is on the instance level databases view: refresh the list of databases
• if the user is on the instance level RTSS view, reset the view
• if the user is on the database level collections view: refresh the list of collections
• if the user is on one of the collection level tabs, additionally execute the following action:
  • Documents tab: reload the documents (like the dedicated Refresh button)
  • Schema tab: execute a new schema sampling with the same query
  • Explain tab: execute a new explain plan with the same query
  • Indexes tab: refresh indexes
  • Document validation: reload validation rules

Cmd-Shift-R (Ctrl-Shift-R on Windows/Linux) should reload the app (behavior that is Cmd-R today).