I think what you're seeing is people don't want to have so many leagues running at one time as to become a chore. Speaking for myself, I won't be entering my PC3 team until my PC1 league has finished. I have another team going as well as a keeper draft. This is in addition to my 5 CD-Rom leagues (different kettle of fish I realize) and 1 retro league
You shouldn't sign up if your not willing to put in the commitment. You don't sign up to participate in 'two' Events, you're gving your commitment to play the entire Tour. When I saw tons of people signing up with no posts on the boards I knew they would be plenty dropping out. Just my 2 pennies.