Thank you for feedback and playing game!
Tools are more like auxiliary game mechanic to overcome frustrating issues of classic minesweeper - 50/50, first cell with 1 and so on. Less experienced players (like me when I started this project) can play minesweeper and use tools instead of puzzle but it's designed to be slower. Tools are not designed to replace puzzle.
I thought a lot about more real-life experience (e.g. wiki contains a lot of "potential mechanics" https://en.wikipedia.org/wiki/Demining) but it makes project a lot bigger. I may return to it in Minesweeper with tools 2 though =)