Hmmmm........
Hide the mines. Put the mine models in the Scripts folder in your shiplist folder, and then put them in the Validated Client folder on the server. People will *have* to use your hidden mine textures, or they won't be able to log on. muahahahahahahaha!
Seriously, I'd like to play with hidden mines. It could be cool, especially when you are closing in on that WE that has surruptitiously dropped that hidden NSM.....
DH's statements about dropped mines being secret in SFB, while transporter bombs are secret, but your scheme would be in line with this. Dropped mines would be hard to see (like suicide shuttles now) while transporter bombs would have the transporter effect to announce their placement.
Good luck keeping up with where they all are.
-S'Cipio