I must say, I think the fares I'm seeing for 1 checked bag is reasonable... some of my upcoming flights are only $10-$20 extra. If B6 were to be smart, they would offer everyone a free "upgrade" from Blue to Blue Plus for the first few months of the program...
I also wish B6 made the EMS upgrade pricing more transparent upfront on the booking page. I've been on some flights where it is only $10 more and some were it is $50 more...