First off, I would encourage HTC to have a screen proclaiming the event upon login into the Main Arena.
I feel the biggest factor is lack of participation lately. Granted it reflects the current numbers that play Aces High but I also feel the designers put too many slots into the event as some kind of 'wishful thinking' thought process. From what I've seen, this tends to make the overall Allied to Axis ratio incorrect.
Instead, I would limit the event to 100 players initially. I know a bunch of you will disagree with me, but the event needs a little exclusivity. If either side fills, the incentive to fill the other would be present. Later, the overall numbers can always be increased if the interest is there. The Axis had a devil of a time last event and were behind in numbers from the very beginning.
That said, I'm determined to join the lowest side next event. Hopefully in the weakest ride, or in a ride without any guns at all in a recon role.