If this were to happen the money cost needs to be reduced to balance this. Not to mention it already takes a very long time to build cities mid-tier and the whales get to ignore this up to this point. It would just make it so that whales can stay at their level and everyone else is having a hard time getting to their score, making the game even more unfair.
It's fine, people need to be at least 13 years of age to play this game so they should be pretty mature. They probably had sexED before so no worries from me.
Did you know that you just posted in the Orbis Central area. THE PLACE FOR ALLIANCE AFFAIRS AND IMPORTANT NEWS! So just keep spamming baseball games and you'll balance out eventually.