a) we fail at releasing Moodle updates to unstable in a timely manner (and I
have my share of the fault here);
b) we consequently fail at releasing Moodle security updates to wheezy in a
timely manner (this unblock is opened for almost two months);
c) Moodle 2.2 is already not supported anymore by Moodle HQ for anything (not
even security), according to [0];
Furthermore on that point, as far as I can see, there is noone taking
responsibility to handle Moodle 2.2 security on the long term (Moodle in
Wheezy will need to be security-handled for roughly three years, yet it is
_already_ not supported).
d) there is (in my opinion) not enough people behind the maintenance of
Moodle-in-Debian: Thomas is a good DM, but he's mostly alone, and I'm not
willing to get more involved.
So as much as I find that unfortunate, I think that the best solution for all
of Moodle, Moodle-in-Debian and Debian, is to not ship Moodle 2.2 in Wheezy.
Thomasz, as you're the actual de-facto maintainer, please voice your opinion
as I have voiced mine: the decision is in the hands of the Release Team I
guess.