>>724509623
The common strategies are common because they are the most efficient. The strategies that do not become common fail to do so because of their inherent flaws. Choosing such a strategy might raise an eyebrow but by definition means introducing unnecessary flaws into your strategy.

RTSes aren't like actual war where the technology is constantly improving and you can potentially blindside an enemy with something unexpected. Past a certain point the community will have solved optimal progression in a match and from that point on only execution of those solved strategies matters.