Tell me about it. I usually play TEC and I was excited to use the proximity mines to slow down offensives to my outer-planets. However, I found that the TEC mines are virtually useless, given the fact there is full x,y,z direction, a ship will more than likely never pass over it.
Then I ran into the Vasari laying down their "Homing" mines, all over the place. They literally cover my entire gravity well and then leave as they see my fleet coming in. The mines sit there and just "home in" on any ship that passes. The mines eliminate my fully upgraded frigates usually instantly and severely weaken if not kill my capital ships on an offensive in their turf.
I think there needs to be something done about the amount of mines Vasari can place, because it just gets ridiculous. The fact that I have invulnerable mines all over my planet's gravity well without me being able to do a thing about it is just a little too ridiculous. There should be a TEC ability that will sweep a TEC owned gravity well of mines at the very least.
At first glance you could say the Vasari mines don't have as much kick as TEC mines, but TEC mines don't move and have about a 5% chance of hitting a ship. Vasari mines simply move towards the ship and blow...
Something needs to be done in my opinion, i.e. Number of mines, cost, a timer for mines being placed in enemy territory so they eventually disintegrate, etc.