I got XBLG just for 1 vs 100 and once it was 'gone', I stopped the subscription. More so than TV access or other random additions, 1 vs 100 was an ACTUAL GAME that brought it tons of non-'gamers'. My family loved it!
@mikehawk: I think the main poster was thinking melt on the 20th and b side the 27th, to split up the events incase people can't go on one of the days (per the first post in the thread). That's how I read into it.