Because phoenix is a set of configurations for Firefox or Firefox ESR
and because those projects are fast-moving targets, I believe phoenix
should not be included in Debian without a maintainer.
Even if it had a maintainer, it might not be a good candidate for
inclusion in Debian Stable unless the maintainer is willing to do
Stable Updates for the lifetime of a Debian stable release.
I am filing this bug now to remove phoenix from Testing. Later, it
will likely be removed from Unstable also.
Thank you,
Jeremy Bícha