Way back in the day Red Alert had mine layers. However they required so much micro management that they were completely impractical to actually use. Homeworld did mines pretty well though and they were powerful but balanced. What does everyone else think? Would some type of minelayer work well in PA? Maybe Homeworld style where you give the unit an area and it goes and mines the area on its own? Or maybe a single use missile that explodes and covers the area below in mines? Then what about mine sweepers? Or naval mines?
Here are some Existing Threads on mines you might want to catch up on; 'Mines' - 8 pages 'Area denial devices and weapons (Suggestions and discussion)' - 5 Pages 'Mines [land,sea,other] & How To Make Them Work' - 3 Pages Mike