While it sounds like a fun idea is this not going to make a lot of difference.
A game should never be changed only to make it harder for botters, because it can potentially interfere with the actual players more than it does with a botter. It ends up being a benefit for the botter, because they can again automate the problem away, while players have to deal with a new problem and do so manually.
Instead, the reverse is usually all round better. Support the actual players, make their game better and less repetitive, and thereby reduce the incentive for botting in the first place. A game is designed for players after all and changes should always keep their game-play in mind and not blindly try to swat some non-player problem, which we know will come back again and again. If an anti-botting solution drives out actual players, then you have created a bigger problem than the one you had before.
Botters can then readout screens, they sometimes read the entire game’s memory, just to automate their responses. They simply won’t have a problem to counter your suggestion. So in your case will it only end up making the life of miners harder, drive the mineral prices up a little, and botters end up winning even more.
In short, focus on the players and not on the botters. Report botters when you see them.
See also the latest devblog on security for what you can do to fight it.