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I can't imagine how much it must cost to construct additional pylons.
FYI, former members of the StarCraft II team left Blizzard to form Frost Giant Studios and we’re working on Stormgate, a spiritual successor to the classic Blizzard RTS games. Closed beta testing begins in December—sign up at playstormgate.com.
You can find out more & wishlist on Steam. GLHF!