One of the most rewarding and challenging scenarios I've ever participated in before. The side-switch makes it dead-even and I guarentee each frame will be balls-to-the-wall as everyone tries to find the enemy, carry out missions, and stretch their aircraft and personal capabilities to the edge of their abilities.
This is one of the funnest scenarios to be a torpedo or a dive bomber attacking an enemy carrier task group too, it is not a guarenteed meat grinder or proverbial brick wall. AAA lethality is cranked way down from the typical MA settings, allowing even the most flamable fuel-laden axis paper and toothpick kites a decent and respectable chance at sinking their target if they make it to within dropping distance. Everyone will have fun - and with a little planning and luck, an awesome experience shared with your teammates.
I'll be upfront and voice that I think the hardest job in this scenario is actualy for the fighter jocks. Earlywar navy aviators didn't have the range or technology that was soon to begin flooding into their fleets and be ready at their disposal. If you go on the attack, your worst and most challenging enemy is your fuel consumption and limited fuel supply. If you go on the defence, it can be pretty quiet most if not all the frame (and thats a best-case outcome, mind you. If the enemy finds the fleet though... you're gonna gradualy work up from being bored, to hunting down and shooting a few pesky single scouts, to then being busy, to finally being really REALLY busy).