Ever since MH came out my group has been using the CotDP material in addition to all of the big box material. The challenge has been about equivalent to where it has been for months, maybe a little greater. A few days ago, though, we decided to try the other big cultural event in Arkham. We took out all of the CotDP material and put in all of the KiY material (except for most of the Other World cards; with two exceptions, I find the KiY Other World cards to be bland and boring).
In the three games since then we've been utterly thrashed; even Yig defeated us! So my question is this: is everyone else finding the new Act Cards and the King in Yellow Herald to be a bit much to handle, or is it just us?