Doug McCrae said:I don't see anything wrong with that. A party of five fighters should absolutely own in combat, given that that's all fighters can do.
Remember, attacks of opportunity in 4e are going to be stronger than in 3e.
Its built into the system. Single strikes are stronger. AoOs are single strikes. An attack of opportunity is going to be close or equal in power to what the fighter could do in a full round as the active character. Imagine if attacks of opportunity in 3e were full round attacks.