With almost 9 days left remaining before the current season ends, I think this season is by far the fastest I have reached the CHAMPIONS league.
Normally by this time of the season I would be going back and forth the Diamond II and Diamond I leagues, I managed to secure my 80 Loot Chests this early of the season. Hopefully though I would reach CHAMPION II again and get an additional 40 Loot Chests.
With the new daily quest rewards, the additional loot chests I am getting for reaching the next league gives me more chance to get those new reward cards and level them up to level 5/6. XD