Thanks for sharing this. I'm still surprised that they don't have Vintage as a league yet on MTGO. I'm not sure if any format would benefit greater than Vintage would by having a league. So many of us are busy people and sitting in front of a computer for 3+ hours on a weekday night starting at 9:30pm is not really feasible, but I digress. At least they finally got Legacy on the league rotation. I may join these just on principle to see how well I can fit these into my crazy schedule.
I've been playing legacy lately just because I can play in the leagues, as opposed to the daily events that I couldn't seem to play in and the two player queues that never earn you a pack of cards.
I admit I was completely against leagues at first but after being more realistic with my expectations I came to realize that leagues were a lot better for me. I would love to play in a vintage one.