[MOD REQUEST/IDEA] Respawnable Defences

I dont know if this is possible, its certainly outside of my meagre modding capabilities (not that its going to stop me from trying), but I was wondering if anyone thought they might be able to do it. I was thinking maybe like having a re-usable button in the citadel upgrade screen (In fact I dont even know if this can be done...) that when bought would respawn all the towers that have been destroyed. I was thinking that itd be quite useful and would make games more interesting. I personally hate the vunerability you feel after the enemy has cleaned your towers on either side of Mandala, it would be nice to be able to respawn the towers near the flags to halt the enemy Demigods. Anybody know if it can be done?