We do not have packages of these, and probably never will. This is not
a bug in the installer.
The correct way to report that you want a new package is to report a bug
against the pseudo-package 'wnpp'. There is already such a bug for
MATE, #708385.
Ben.
This is not right. As of 2012-11-17
(http://packages.qa.debian.org/c/cinnamon/news/20121117T100008Z.html),
cinnamon has been admitted debian unstable and so it IS a debian package
(http://packages.debian.org/sid/cinnamon). As of 2013-05-06, cinnamon
migrated to testing, and it is now in jessie
(http://packages.qa.debian.org/c/cinnamon/news/20130506T163905Z.html).
So you should consider reopening this bug.
Paolo