riot is trying so hard to make game length similar to hots
by that i mean, games don't usually go past 20-25 minutes.
the problem with this is that in Hots, while games dont usually go past 20+ minutes, there is always 100% a chance to turn it around because items don't exist and experience is shared across the team. heroes are highly personalized and are not broken by FoTm op items that riot doesn't realize are super op until 6 months later.
meanwhile in league, if you're down 5 kills in the first 10 minutes, and a tower FB, barring some almighty throw, odds are you're going to get your balls kicked in.
i personally prefer games that stretch from 30-45 minutes, because that's when its actually possible to make a comeback in league. a goal of games that last 20-25 minutes set by riot is a BAD idea and only promotes uncompetitive stomps.