Hi guys! First time posting here.
If you join a city but leave within 10 days, the system will kindly remind you that a percentage of your investment will be left in the old city. While if you insist, your networth will drop by the amount of that percentage times your investment. However, your investment doesn't change. Which being said, if you originally has a networth of 100G and investment of 80G then after losing 10% of the investment you have 92G networth and still 80G investment. Theoretically, if you constantly joining and leaving cities your networth will be almost the same as your investment. Which is not a big issue.
But the wired case is somebody is looking at that number difference to figure how "well" the player can do in the game (mostly how well he/she can do in raiding) because for a fully updated shop, that number difference only reflects the gear values on heroes. Which being said, the larger the number difference, the stronger your heroes, and the more you do in raids.
This may sound a bit creepy but if you think about it, it makes no sense to only decrease the networth and keep the investment untouched. The investment should be exact how much money a player spent on the current city but not some "dead money" in some "who knows" cities. Only in this way the number reflects the contribution of a player to the current city.
I wonder if anybody is thinking in the same way and I personally hope this tiny issue can be fixed. And also apologize for my bad English.