I care (a little) because it introduces noise in the package build.
Yes, tm should go away at some point. I recall discussing this on
xemacs-beta at some time in the past; I'll look for those emails.
Commit rights for tm would be great, as tm will be totally broken with
MH-E 8 (my next big project). I will double-check on xemacs-beta before
making any drastic changes.