I rarely play secret societies and always chose hermits or owls. I thought I would try vampires against zombies, but sadly soon discovered barbarians cap at 10. Anyway, regarding vampire castles, I realize that the yields don't increase when the yields on adjacent tiles increase. I want to update the castles to get the highest yield. Here are my questions -
1) Can I remove and replace the vampire castle ad infinatum?
2) If not, when do vampires gain new charges to remove and replace?
3) If I remove and replace a vampire castle, does that mean I will be able to build 1 less total than the maximum of 4?
Basically, I want 4 castles with the highest possible yields at the end of the day.
Thank you so much! Can't believe I don't know this already...