Mines are overpowered

As far as i play, every game i saw was won or lost with minefields.

 

I'm a vasari player mostly (advent if not vas), and my initial rush is now very simple: 3 mil labs, ruiner prototype, 2-3 ruiners and fill a gravity well with mines, repeat at each world. Unbeatable.

 

So what i might suggest (as other did too) is that mines would not stay permanently but only 5-10 min or so on.

One also suggested that you could have a given number of permanent mines (but then how to d...