Spoken like a manager.
Something is either being actively developed or it's dieing, there is no in between with software, there is no finished state.
Something is either being actively developed or it's dieing, there is no in between with software, there is no finished state.
I wish more pieces of software would get to the finished state and would slip into maintenance mode.
By the way - the IETF standardised an OAuth2 SASL mechanism (RFC 7628) a couple of years ago, no idea why GMail doesn't support it.
Basically, the only thing that is kind-of Gmail specific is the auth support (https://bugzilla.mozilla.org/show_bug.cgi?id=849540). If Gmail sometimes in future switches from OAuth2 to some other protocol, the client will have to be updated.