I don't think most crew members would have the time to spot all the mines thrown around their ships, especially since it is possible to throw mines in a way that nobody on the ship would notice them. In the heat of the battle people don't have much chance to spot so much anyway, as they gotta shoot and repair, so this idea could in fact work. It could give captains an extra tool to fight mines. They would still have to rely on their crew, and most of them would not spot mines, but once or twice this could save a ship. It's the same as yelling "Mine behind us!'" in chat, but this one would allow people without mics to contribute, and spots could stay on to help captains navigate out of mine fields. Worth a try in dev app. I'm just worried about having too many spots on the screen, as they could get messy and they take away the realistic feature of the game (the same arguments that were brought up against spotting ships can be echoed here basically).