Right now we're using a horrible wikitext hack with Git/New repositories/Requests and Git/New repositories/Requests/Entries to try to make a workflow, but it doesn't work very well. People screw things up from time to time, it's not always clear if there's a response needed, and it's very hard to get notified of new repo requests, having to watchlist a page you can't read.
I propose that we replace this with a simple Flow board, where requests go in the top and are marked "resolved" by the Phadbricator/gerrit admin that does the change. What do you think? Pinging @QChrisNonWMF in particular as he does almost all the work on this, so to a large extent it's their call. :-)