@LadyLilith It's not that it's a bad idea, it's just the box has it's own complications right now. Coding this may take alot of work, which is something that's already on their to do list. Who knows it may be implemented, we will just have to wait and see.
As for the money reduction for having this tool, I believe it is due to it being too convenient. Alot of money is being made by people actually hunting and selling good IV pokes they find. Currently we would need more money sinks in order to balance the amount of money people are making off really good IV pokes and shinies, which is quite alot. A tool like this would be a good opportunity for a money sink. We should seek to find ways to add a money sink in the game, and since hunting is a core part of the game it definitely needs to be balanced.