Now that containers are becoming the standard, it would be great to provide a streamlined way to navigate between the different PDB's in a CDB.
There has been a drop down for years to set the "current schema", effectively doing a "alter session set current schema=SCHEMA1" whenever the option is chosen. This works in the editor and the schema browser, and is an option in activities like "schema compare".
A similar drop down to select the active PDB would be awesome, avoiding the need to manually type in "alter session set container=PDB1" or create a new connection (TNS entry or direct connection) for every single PDB (editor window etc).
The PDB selection would be very useful in a lot of places, for example
the schema browser
the session browser.
The PDB connection should default to the currently connected user - eg, the common user (c##user) or to a different user that is editable/saved for each PDB.