Dear RIOT, this is just another game length rant.
This is one of hundred thousands (if not millions) of post from summoners addressing their distaste for the current pace of League of Legends. For roughly 2 years the boards has been flooded daily with concerns of new match length. Furthermore, I've never seen a single post or comment from any summoner actually defending the shorter match times. Even in pro interviews, the answer they give is always a "safe" answer.
Take us back to the S2/S3 days. Match lengths of at least 45-55 minutes is (from what I've see) what everybody wants. In the beginning, when I clicked on the League of Legends client, I always had to be sure I had 70 minutes available (occasionally matches would get close to 80 but it was rare). I can't recall a full match ever being less than 40 minutes, and the majority floated around 50 for my games.
In good 2K17, you pretty much know the match is decided around the 15 minute mark and ends around 25 minutes unless the winning team throws. 1 kill in lane before the 4 minute mark can almost guarantee that lane will snowball if the jungler doesn't get a revenge kill before they can recall.
Looking at my match history, my new match average (win or lose) seems to be about 25 - 35 minutes (nexus destroyed). That's a 20 minute decrease from my old average. In the current state of the game, 4 full built items is standard. I used to reach full build every game back in the day.
At this rate, I expect matches to be Overwatch length by 2K19.