When connected to an Atlas cluster, I can see the Atlas internal hostname slug in the command prompt:

Atlas atlas-l1ugii-shard-0 [secondary] database_name>

It would be easier if this displayed the Atlas hostname, that matches the UI, and includes the cluster name (e.g. "Atlas clustername-shard-0 [secondary] databasename>").

This would help with distinguishing between multiple shell connections across multiple different clusters.