Got the replacement board, and built it last night. Limited testing last night on rigid strips went well, with just the problems that others have noted above.
A few comments on building it, which I think are worth noting in the manual once that is written...
- There are two different capacitors used, both of which look identical except for the very, very tiny numbers written on them, so it can be very easy to confuse the two. Mine came in separate bags from mouser for one board, and I had to pay special attention not to confuse them. I can only imagine how hard it is going to be for someone who is in a coop to keep track. My recommendation is to install all of one type, take a break and then do the others.
- There are 3 other parts with 3 pins (I am not tech savvy enough to know what they all are and do), but they also all look very similar except for the tiny numbers on them. I am sure if there aren't installed in the right places, they aren't going to work. So just need to emphasize that they need to go in the right spot. This really isn't that much different from the old boards, just smaller parts and smaller numbers to try to read on them.
I do like the compact size of the new board and parts!