Tables will be available for at least the 3 styles of play you mention, Bob. That's a promise.
How is this working now?
Hmm, well... For starters the interest level this year was quite a bit lower than we anticipated. We've got about 66% of the number we were looking to get. This, among other things (like the town of Plainville), have complicated things.
We want the Megabattle to feel different from year to year. If we went to the one 10v10 and two 5v5's I think it would have felt very similar to last year, especially given the table layout we were going to use.
This time around, with 40ish players again and the "big" Ball Room booked already, we wanted to go with something that would be both different than any previous year, and provide players with a game they are likely to talk about for years and aren't likely to play in again. What came out of this? A 48'x6' table that will truly provide a mega battle.
Derek and I had a brief conversation about what to do since we've only got 40ish players and we both had the same feeling. We decided to go with it.
Overall I think it has been very well received. It provides a different set of challenges, not least of which is the pace that the game will be played at, but that burden falls on us. I'm going to do my best to make sure we get as many turns in as possible.
The short answer to your question, Bob: Strategic Redeployment, Flank March, or some other asset that allows you to deploy (or redeploy) where you'd like?