I already suggested smaller tables
Larger AP games change things in other ways too:
- A smaller proportion of the army comes from the mandatory minumum base numbers
- Loss of the camp counts less, percentage wise, towards army break and scoring.
- More/better generals needed to effectively control and bolster the larger numbers of BGs?
Players of course can react to all of those, and of course the ability to adapt to circumstances ought to be part of a great generals skillset!
Requiring players to have more figures to compete in a tournament might be a stumbling block for some.