Thanks for the comments.
Let me use a different "notional" arena schema to explain the idea. Good points Avanti, so I am adjusting the idea a bit. I am going to use the current Peak and Off hours Arena times in this example. With the exception of Titanic Tuesday. There would always be two late war arenas up. One arena time-line could focus on supporting the traditional "extended hour players", while the other could support the "map mover" concept.
For those interested in "taking land to win a map", it can be frustrating to work one day to take a large portion of land only to have the map moved back during play times your life can't support. Shorter distinct arenas that progress is retained until the next arena up time solves this issue. But as you noted, the arena up/down times create their own distinct issues. I think the new concept might be able two support both types of gameplay better. I tend to go where my squad is, not where the bulk of players are.
In my example Arenas 1-4 would support a particular continent's peak play time. One might be called European Arena, Americas Arena, Asian Arena, etc. The times don't necessarily have to be serial unless there are HTC server limits.
Instead of having two arenas with the same basic purpose, size/map being the only difference. The arenas are conceptually unique to different player preferences. I think arena balancing might be able to be lifted.
Again thanks for the constructive feedback.
Jarbo