we’d very much like to get rid of the addon mailing list for pull-requests…
but not without providing a just-as-easy replacement.
from now on you can create a git-hub issue here:
https://github.com/xbmc/repo-skins/issues
and enter the same details like you did when sending a pull-request by email.
(see: Submitting_Add-ons#Issue_ticket (wiki))