Well, I will comment on behalf of those who use feeder cities, if the game allows it, you do have every right to leverage what ever you want and I don't judge you. The game is simply trying to get people to spend a lot of money and gamers found the loop hole. If it wasn't in app purchasing there wouldn't be a desire to progress through means such as this but I don't have time or the desire to run a second city and the little bit I have spent won't increase. In fact, maybe I am just at that point where it's wash, rinse and repeat.. my $15-20 spent was worth the entertainment time it gave me its all 😎...pink panther