If you ask me, the Gold league turned most competitive than ever as most of the players grind in this league.
The rewards are somewhat average. Someday your luck kicks in and you get a pack, a gold card, or a bunch of rare and epic cards, or a good amount of SPS.
But most days the rewards are pale and filled non-attractive 'Pelacor' reward cards and potions.

I'm paying $1.3 per day in renting cards to grind in the Gold league, still, my winning ratio is 1 in 2/3/4, and earning only a fraction of my spending.

Anyway, thanks for the post.