I think this is the best place to put this...
I think the reason that there have been so many comments about the progged look not being ideal is because there are many of us (me included) who can recognize that classic look but who can't recognize a general good pattern in which we can score. There are other (like you, psu) who can recognize those "workable" patterns because you've researched them over the years, but the rest of us can't recognize or don't understand the nuances of those decent looks. If we don't see a ridge on the west coast, a 50/50 low, and a big, red blob in the NAO domain then we assume that it's not a good enough look for snow...or it's a look in which we are very likely to fail.
Anyways, thanks for the work you put into this. Your skills as both a hobbyist and a teacher really come through when explaining what does or doesn't constitute a pattern that can bring us snow.