Small QOL thing I've been working on is changing the behaviour of tile colliders. I now scale up on mouse over, which means that you need to move further to move off the current tile, and when digging, I hold the collider in its current position until you move off it so that the tile behind doesn't get automatically selected.
I never felt missclicks were a thing that happened frequently, but they did happen from time to time, and it's nice to have a way of addressing that little friction point