A few updates.
1) I reached out to the institutions that gave us the Freddie / Fannie loans, and the news is pretty muddled, which isn't great news. Basically, this is very much "at the discretion" of the lender, which makes this vastly less useful. Lenders are scrambling to figure out their response. Basically, this seems to be closer to a "suggestion" from the FHFA than I had first realized.
2) As for impact on my operations--too early to say. I expect it to be horrible but I won't have good data until early April when rent is due.
3) As for impact on acquisitions / sales in multifamily--from everybody I've spoken to (both real estate brokers and loan brokers), the market is pretty much frozen.
4) Good point on the 50% thing.