AH3 has the potential to compete head to head with offerings combined into one game that you have to play three other games to realize. I hope that is the direction AH3 will take while keeping to it's core MA sand box principle. Let the Staged Mission Arena, AvA and SEA have the fun of presenting the historic matchups in AH3.
The random kludge aspect of fleets or even mixed fleets from different protagonists in the AH3 MA is attractive. The idea of a fleet hunting for other fleets in the MA with an Iowa class ship is interesting. It can only get better from there to attract subscribers.