I like that theme, I hope this map gets to the detail stage quickly.
If there are 3 CP's per stage, say red team was pushed back to their final base/stage and successfully defended. So in the next round, in the central/rural area, would the center point be neutral again and both teams are on even ground? If that's the case, the only problem I could imagine is that if the final points were too easy to defend, it would get very repetitive playing on that central stage over and over again. But who am I to comment on balancing...
Point: Love the theme, like the game mode, please make.