What’s r+wc do? Would it be useful? Google’s giving me nothing useful; all that’s ever really mentioned is “r+” itself, and I realize that (in the mozreview system, it’s actually just a signal to the build sheriffs to include the patch into the next nightly on the release train). Is it “approve with next commit” or something?
r+wc means “review approved, with comments”, and is usually meant as “fix these problems and then merge”. I usually see it in places where the original author already has the power to merge, regardless of review, such as mozilla-central. I don’t know of any automated systems that include a feature like this.
I think that my actions in that Github issue are basically what the r+wc pattern implies: it is giving over control to the author. bors delegate+ can do that today. “approve with next commit” sounds surprising to me, and I think keeping more explicit signals would be good.