The idea would be to convert villages into a city for tactical use. I understand that some may take advantage of this system and have a few suggestions how to implement it without the game becoming a farmvill/unbalanced game.
1: very expensive cost. So ridiculous but obtainable it gets people thinking if it's worth the area they put the city.
2: long waits and one at a time. Make a six hour conversion rate, only one city conversion at a time to prevent spamming. Increase of time if majority finds 6 hours too short.
3: limit the conversions and keep them separated. The city alone could be very well used as nothing more as a check point for your troops to reload before moving against an enemy. With a set distance per city it would over rule the idea of a ridiculous defence making a nearly impossible barrier.
I'm sure others will have suggestions to keep it a fair play if this is something the community wants to experience; it is not unrealistic for a village to become a city through great wealth!
Thank you for your time in reading this; and please let me know what you think!
happy Easter everyone!