I caution you to make sure you get dedicated intelligent participants. Otherwise the league balance will be so skewed in 2 years that it won't even be fun.
I'd like to try one out - having not participated in one before if you guys are willing to put up with a rookie! I definitely have the enthusiasm & interest if not all the knowledge of how to best run one.
I'd be interested in a keeper league. I would prefer to have the ground rules set in terms of number of players retained and drafting of new players figured out before the season starts though.