Hell, IMO if TAILS were serious they would roll a hardened Gentoo distro (or OpenBSD) without so many packages and without so many odd additions, including:
1) The 'Whisperback' package
2) Not shipping with 'autotest_remote_shell.py' and 'do_not_ever_run_me' in /usr/local/sbin and removing all traces of debugging scripts - go ahead and read both files on TAILS and question why a distro such as TAILS needs these.
Don't suggest liberte linux, development has stalled since it's first version a long time ago. Don't suggest the OpenBSD Anonymous Tor CD, it's outdated and won't connect to the Tor network.