Kira

this is a very interesting idea, but I can see it being abused against micros or any alliance not in the top 25. so I suggest setting up some limitations, for example alliance 'A' can only set Tariffs against 5 alliances and 50 nations. I just hope I'm still playing by the time this is implemented in five years.

remove the 30 cities limit on this project.

This is probably a dumb idea, but why not gradually increase the timer from c10 to c15 like this: from c10 to c11 timer is 2 days from c11 to c12 timer is 4 days ...... from c14 to c15 timer is 10 days and the rest is 10 days like usual. This way people can't just be boosted to c15 in one day without buying credits, and players can get there at a faster rate.

Several months ago, three project where added to the game, and with the upcoming update three new ones are going to be added. On the other hand players where only giving the ability to gain one extra project slot using one of the projects of the previous update (Research and Development Center). Wich is why I believe that there should be another way for players to gain additional project slots. And in my personal opinion, the best way to get the additional project slots should be by pushasing them using credits. Of course projects are important, therefore project slots are extremely valuable so I suggest some rules and restrictions to prevent abuse and also keep the game balenced: - You can only purchase one extra slot every 90 days - A player can only purchase a maximum of 2 extra slots. - The price for the first slot is 5 credits and the second is 10 credits. If a player was to purchase the coin from the market (most players will probably do that) they can calculate if it is more profitable that way or if they should destroy a project they already build or purchase more infra, and that will depend on the project they want to build, the projects they already have, their city count and how much ifra they have.