Air Warrior (early to mid life of AW) had only a small fraction of the player base that AH currently has, yet it was nearly always possible to find good fights. Of course, the whole Air Warrior world was about 2 sectors by 2 sectors of our sector sizes.
It's all an issue of density of players (players per area) -- not area alone and not number of players alone.
People who say, "Big maps are fine -- we just need more players" are correct. But we don't have more players right now, so that is a moot point.
People who say, "To increase action, we need smaller maps" are correct. And doing that is very possible.
I would very much like smaller maps or reduced active area however it is accomplished, especially off peak.
Having flown plenty of off peak (like 2 am and later Eastern time), I do not believe people who say, "It's no problem to find good action off peak". I think that they don't know what they are talking about. I think that they flew once off peak and it seemed OK, so they think that's how it always is, or they flew at midnight Eastern and thought that was off peak, or the have an amazingly low bar for what passes as "good action."