I feel riots chronic missed opperunity is coustom games.
Moba's started because of RTS Map editor, its the birth and heritage of the game type. It was a coustom game excusive. I don't think I have played a coustom game in 6+ years, hell I know folks who never even played it once in their entire lol career.
So folks I ask you to try and Imagine, every special game mode, every event, every for fun game type, being a optional download players can opt into and play when ever they want. You miss the Crystal Scar? shazaaaam ITS BACK BABY!
Then, lets take It a step further, now riots gotten behind community driven content before, what if you opened the game up to modders and map makers. If Riot released a Map editor then had a site or page they provided links to download player created and managed game types? for me HELL FUCKING YES
All kinds of awesome potental and added intrest into the game at the low low cost of fucking 0$ for the company. I call that a win win.