In another poll it was unanimous to keep them (cept my vote of course which I dont mind), but was suggested to do some other nice things such as no light (can be hidden around the base like vehicles with no lights on), auto fire (normally they only explode if you manually blow them up) and increased damage (since they are stationary and can't move towards a target, being able to do more damage makes them great for a mine)
All three combined makes a hideable, auto-targetting and powerful trap or mine.