RTS as a genre has always favored aggressive play. Even in games that tried to favor defense, like SupCom, turtlers are stills not welcome, and higher level pla

RTS as a genre has always favored aggressive play. Even in games that tried to favor defense, like SupCom, turtlers are stills not welcome, and higher level players start aggression quite early. Rarely will a rush downright end the game, but pulling one off correctly will generally put you ahead. I don't think any RTS game will be able to deal with this naturally, only by adding rules like NR20 or even NR40 can you avoid early aggression and turtle in peace, and even then the winning strategy will always be to expand as aggressively as possible and to defend with units instead of static defenses.