To not switch between apps which is obviously an excessive time waste.
You can change prices by simply adding or subtracting value so instead of rewriting whole price value or clicking at the exact position and moving your hands back to keyboard to type you can just add - 10000 at the end
You can, let’s say, split loot between participants by just setting /5 in amount selection input box.
There are much more usecases in a game that is all about such things. And all of them are become available WITHOUT using 3rd party apps or even calc because this is extra steps to do simple task.
This feature is obviously can be turned off in settings.
The most difficult part here is write good parser that can be free of possible exploits (such as code injection), in the end UI returns same float value as current one, just making additional calculations inside before returning such value and this value compared with max possible value in the way it already works today. From dev side it’s not that much to do only if there are not spaghetti code. I know that every dev team have a lot inside source code and there possible spaghetti code but still, this is not so huge feature that can break stuff or make things as complex as you think. In the end, it’s their choice what and how to do so none of you should worry about.
