I have some reservations about this Tiger thing. The manual says they use "shared leadership" which is as much of an oxymoron as I've ever heard.
Like I said, the shared leadership thing - as it was - worked very well for my son's den for 4 of the 5 years. I did the orchestration - defining the topics, giving target dates, and making sure things were set as promised - but the other parents (and myself when it was my turn) did the heavy lifting in preparation for topic presentations/activities and selection/coordination of trips.
I simply could not have done it any other way. It also helped the youth and the parents to get to know the other parents much better, and I think keeping the parents more involved was a great thing. Most of those parents are still involved in my son's troop. Right now they include two assistant Scoutmasters, the troop committee chair, the treasurer, and the activities chair. Active parents are great!!