My overview of E8:

Positives:

Best talent and IQ at this age.
76% of games decided by 1 or 2 goals.
High-level coaching / scouting.
Great venue for playing / watching.
Invaluable experience for the kids.

Negatives:

Must adopt standard AGE verification before someone gets hurt.

Set rosters. Players should not be allowed to join a team mid-tournament.