The main arenas are HTC's bread and butter.
I didn't fly AW or WB but I'll take everyone's word that it would be detrimental to the game to make it an AvA or nothing set-up.
For those who prefer historical match ups, about the best thing to do is fly in the special events, or try to help increase the current AvA population.
My work schedule rarely lets me fly the events, so my focus is on the AvA.
If you are interested in a strategic type of campaign game, One starts next Thursday and then Mr Fork will be running his "Battle of Aces" in September.
You might try and interest some of your friends and squaddies to give it a go.