I honestly don't blame Riot for pushing for shorter games
With the statistics, it makes sense. I see people on the boards complaining how games are straight stomps and should be longer, but then when URF comes out the playerbase spikes up and is ready to play. It then drops drastically. People would rather not play at all if URF isn't around. Given this, why wouldn't Riot as a business push for shorter, more hectic games such as URF?