Since the update was released June 25th and you completed Dwarves by July 6th, you didn't start and finish under the new structure so your comments are as the OP's comments only a partial tale of the story. We do need to look at someone going through it fresh to determine the proper balance between the mines and foundriesI just completed Dwarves under the new system with 13 granite mines and 5 copper mines. All the granite upgraded to level 4, stopped the copper at level 3. And that would have been sufficient to keep up with my tech advancement were it not for the Air Traders event. But I won some KPs from chests in the event and there were a couple of quests in the event that require you to buy large amounts of KPs. Those were the only times I had to use PPs to keep up.