That is weird. Usually I find tiers 1 to 3 mobs much easier than act 10 (as long as resists are good after the 2nd kitava curse).
Unless they drastically change the rewards, I don't see myself playing this league too long. I will wait until I try the league mechanic in maps before my final judgment.
So far, I haven't seen a good (or half decent) corrupt drop from scourge or created a corrupt item that was better than the gear I was wearing.
Still in acts with not a lot of playtime yet, mostly I'm playing with my son in my lap watching cartoons on the 2nd monitor so I take it slow or afk in my hideout.