Also Act 2 he seems to hit harder than other times. Someone else did a thread on this were damages was spiking. Something they might want to look at.
Another thing in Act 2 I clear the oasis hit a couple elite packs no big deal then get to the warden and he has 2 packs of purple\blue snakes on either side of him. This has happened more than once. Act 1 warden always agros tree or anything close to him. I am assuming this is as intended.
Act 3 he has been hiding up stairs you never go up, happened at least 4 times.
I feel bad for the players that only have maybe 2 to 3 hours a week to play. I normally can get a full set of keys in 3 hours, but sill then you have an hour maybe for ubers depending on the group.
I get more keys soloing MP 5 then if I was doing coop. I would rather for 1 or 2 runs solo take more time then do 4 or 5 runs coop. Coop is more fun but brings it's own set of issues. Molten packs solo if you stand in one place and tank them you don't get molten everywhere were in coop they are going after everyone so molten is all over the place. Same with arcane the more people the more sentries you get.