I'm rather disappointed too. It seems that things have dulled down for me since Megan came aboard. Weiner's fascination with her is beyond me and I think his storylines have suffered since she appeared. Most of what I read are criticism of the actress who plays Megan, along with pleas that he axe her. It appears that Weiner ignores it.
This show used to win awards as best drama. It's simply not in that category anymore. In fact, I even wonder if they deserve a nomination at this point. Still, it's one of my favorite shows. I guess out of habit and there aren't that many great shows on tv, so the selection is rather slim.
This season we had all the mystery about Sharon Tate. There were all these clues such as books, movies, clothes, etc. about her, yet it seems to have gone nowhere. I guess it was just a gimmick by Weiner. For such a classy show, that kind of thing is just cheap, IMO. The guy is convinced he is all that, when he's not. MM has many loyal fans. They shouldn't be insulted by an arrogant writer who is way too self indulgent.