Unfortunately, I'm not going to be able to give this the attention it deserves before the 3.7.1 cutoff. The changes are sufficiently tricky that I want to make sure I think through the issue in the appropriate detail.
Ned: I've made it not a release blocker. Please remove yourself as nosy if you don't care about this issue. I don't plan on making it a release blocker again, I just did that because it was so near the deadline.
Yury: Sorry for not being able to get delve in to it sufficiently. Thanks for your work on it.
I should be able to review this in the next few days, so we can get this in to 3.7.2.