One consistent issue with my experience with preseaon
There are no comebacks. All my matches are stomps. Inhibs down before 20 minutes. When one turret goes down the next will follow in the same push. The old saying "You can lose lane and still win late" is not true anymore. If you lose lane you severely cripple your team. 20 minute matches aren't fun because it leaves no room for those amazing comebacks. No more great games that are completely even to the very end.
It is not fun stomping out an enemy team and it is not fun being stomped.