It would also be handy to be able to make it Mandatory to choose an E164 format when manually entering a client phone number.
As of 05/2022 it is optional, but it would be a great way of keeping phone numbers uniform so our phone system (3CX) can pick up and give us decent caller ID. At the moment, we have users putting in all sorts of data including formats such as (example only) : 0061, +61, 61 and often without any country code whatsoever.