Mine detonater kit ideas

[GooglyBoogly]

Another problem is that unlike other non-weapon items of similar cost, the mine detonater cannot be combined with other items to save up item space, making it very costly late game when you cant afford extra item slots.

This is just plain incorrect. A mine detonator costs 1k and can only detonate mines, it cannot see them. However, it can combine into a mine DEFUSER pack that includes a radar and thus can counter smoke generator and trader windwalk amongst other things.