The program is very well organized. My experience has been great, from the easy to use website, the communication from the league and coaches, to watching a well run game, including referees. All of the hard work by the coaches has our family wanting to come back again.
I like how it's organized but not too "serious or complicated" so working parents and busy kids can enjoy it without being overwhelmed (I have experienced the other). Also, the communication is the best I've experienced and just the right amount. The on line tools are simple, scheduling easy and refs are knowledgeable. Kids seem to be having fun and learning new skills. We will be back!
We love I9. As the kids get older and want to still play flag and not play tackle yet, you might allow them to practice once a week and increase the quality of the referees to allow the kids to be competitive. It's a little limiting with the options out there and we'd love to stay with i9, but may need to go to another league to allow them to feel more mature.