[EricH]

I don't have any rule suggestions, but I do have suggestions:

#1, get parents involved. You never know what they'll have to contribute. Anything works, from meals to mentors
#2, Safety first. Stress that. I can't stress it enough.
#3, Read the manual. Everyone. The whole thing. Once. Have a rules guru who has it memorized. Have a second rules guru for the Q&A.
#4, make sure that team roles are defined clearly before the season. This causes more friction than a lack of a key bearing.

And in general, see the CD whitepapers and any other team handbooks, etc. that you want. Take the best ideas and adapt them to your team.