It is just plain bad. Your position on the leaderboard (and your final reward) depends 95% on the luck you get on your queue and 5% on your ability. New people are playing pvp now and I don't blame them, in fact i'm happy that there are more queueing. But this season thing is scaring them away, because normally if you have a vote kick you try to kick that person to not lose and descend one page of the leaderboard. Then you have people that throw away a match just because they have a friendship with someone on the other side, or queue premades to gain wins.
For the next season, make battle trophies obtainable with each win instead of leaderboard based and put a lesser reward for leaderboard position.
And for the love of god please turn off the automatic reinforcemet when a player leaves. The one who queues on a losing match will get that match lost and its not his/her fault