What the heck happened?

The Game League of Legends is a game of familiarity, meaning one can predict enemies abilities (if one knows the game well enough); also a team can practice a strategy, for first blood, ganks, ect... This is similar to counting cards being the one who has played the game long enough can memorize every champions abilities and strategies around their team. This is unfair to new Pro- teams, and so RIOT had to change the game vastly before anyone caught on.. Screwing over their fans who were still practicing solo-que strategy