Good suggestions.
The mine one though is nessassary so I won't be changing it.
The reason being that mines should be cloaked, all levels. A player could use this mine exclusively, IE like the pirate race, and they would want it cloaked to gain the element of surprise.
I like the suggestion for the defiant. Will use it as well as chcking out that upgrade problem. Thanks for the report. Your name has been added to the list of thank yous.