I believe someone else did that (Ed Kolis?), but it was to make ppl use mine sizes other than small and or to reseacrh up to lvl5.
i already know of a devious use of the tech.
that said given the size of minefields it would make for interesting twist, though based on what i did in another Sweet game, Tesco you had no idea what I was plotting back then, it wouldn't phase me. i had lvl 10 gravitic sensors by turn 110 i think and lvl 9 cloak and 2 turns away from lvl 10 cloaks, man was it nice, i could see everything and go any where unseen. There was a mine field as large as 309. and I was scanning every new ships design and running sims to test them as they appeared, i even had............. well any way the mine idea would make an interesting twist.