I'd say the importance of map awareness and map dominance are two criminally underplayed essentials in Starcraft. I watch a ton of coaching streams between QXC, Idra and everyone in between and I almost never hear them talk about map vision and map awareness. It is always "Do X build order. Oh you got supply blocked here. Your third is late" instead of harping on the fact that they let their opponent sit on the watchtower with a probe for the first 8 minutes of the game. Once I realized that games I won and games in which I dominated the watch tower went hand in hand I started winning quite more often and never losing to frustrating shit.
Also going hand in hand with map dominance means you can have your army safely near your opponent's base. This means when you see an opportunity or a weakness you can seize it and punsh them.
Also going hand in hand with map dominance means you can have your army safely near your opponent's base. This means when you see an opportunity or a weakness you can seize it and punsh them.