I did Act 3 and Pony level last night. Now that I look at it again, I don't think the affixes were really changes, I think it's just very random.

I didn't get 1 waller in all of act 3 last night, I cleared several maps and did seigebreaker (who enraged and seemed to reflect like 3x more damage at least, it was nuts, but I still got him).

I did get some tough pony packs though, but nothing that crazy. They just hit for a ton, and I died a lot.

When my alts die, I can often times finish off the pack or at least kite them to the spawn point so they don't reset.

Hopefully Ellay can give you some Monk tips, I think your gear is very solid, so it's probably just a technique thing. You find one little trick and it all comes together.

I've watched a lot of streams (DH, WD, Barbs, Monks) and I haven't seen anyone face-roll act 3,4 or pony. People seem to still die quite a bit.