The one thing I will always compliment Riot on is the fact that you don't HAVE to buy content...
I never feel like I have to buy a skin or anything to stay competitive or to enjoy the game. Unlike the rest of the video game industry which wants to empty your wallets. For example I play clash royale and battlefield 1 alot, both are very enjoyable games except: that it would take 14 years to max every card in clash royale without buying gems which makes it quite pay to win. Battle field on the other hand is a really great game but they only released you half the game for $80 the other half comes in the $70 season pass.
So good on you Riot for not being the worlds biggest cheapskates.