You say many games yet only reference SC2, and you say so many professional gamers yet only reference State of the Game. A few players of one game doesn't sound like much to me.
SoTG does have a varied cast on from week to week, they are generally the most vocal players in the community however I do agree that it just limiting my references to just SC2 and a small selection of players doesn't give my argument much weight. It only gives you a small picture of how the overall player base is feeling. Much like a small clique of people posting feedback in a private forum.
Professional games and gamers only make up a small part of a game's player base too, however they don't play these games at a high level purely because it's well balanced or deep. They play it because they enjoy playing it, the feeling of working with your friends to take down an enemy team in a moba, parrying chun li's super with no health left and winning your match, dropping off some marines to harass a mineral line while engaging the main army, performing an amazing four way flank on a wehr position and routing the player.
Balance and depth do help but feeling like a bad ass while playing the game trumps all those elements any day. When you make a game when anyone at any level can enjoy you will naturally see professional gamers emerge should the general mentality of that game's community allow for it.