Hi Nathan, Some Apache mail lists won't like HTML email or "top-posting". I think the subversion dev mail list is one of those, but I could be wrong.
You subscribe by emailing dev-subscr...@subversion.apache.org :) On GitHub Pull-Requests - yes that'd be super useful. Julian has been developing "shelve" and "checkpoint" which would doubtless be the basis for light-weight pull-requests. At least "patch sets" was in Google some 12-14 years ago (for their Perforce configuration of their monorepo - https://trunkbaseddevelopment.com/game-changers/#mondrian-2006) - Paul