I've played through half a german '36 campaign now, and SMEP is excellent as always. However, there are a few things that annoy me a bit.
-The first is a fault with the new puppet realse system, but would it be possible to remove the dissent in the event as well? You are forced to release several puppets in Yugoslavia, and so this becomes rather painful.
-Secondly, while I like the automatic puppeting of nations you conquer like Turkey, Iran etc, it would be nice to have a "b" option where total conquest is preferable. Reason was, I wanted to release the Ottoman empire, so they could project some power in the area with german tech. But I never got the chance.
-Also, I think a seperate British surrender event should be included if the home islands are conquered before the US or Soviet Union enters the battle. I know there is one such event, but I didn't manage to make it trigger even when the Home islands, gibraltar and much of North Africa was conquered.
There is some work being done in the main HoI2 forum about such events..