Just some thoughts:
* i do not like Michael Bluth at all anymore. He used to be the most likable on the show but he is now probably the most annoying. I can't tell if that's the point i.e, making Michael into more of a dysfunctional character who better fits into the family or having the viewer see Michael as the rest of his family sees him. Whatever the cases, if it feel off.
* Tobias. HOLY SHIT. His episodes were great. Especially the methadone drug clinic stuff and his Fantastic Four musical.
*It was cool seeing Roger Sterling in a couple episodes.
*While it sucks not having the entire cast together (and it was obvious that they were not all together) , the one on one scenes (i.e GOB and George Michael at the gay bar, Buster and Lucielle, GOB and Tobias) were so goddamn funny it almost made up for it.
*There is an odd lack of Buster in the season.
* I did not like George's ending. It felt out of place and strange.
*The ending to the season was anti-climatic. It left me wanting another episode that provided a better conclusion.
All in all, I can't complain. I enjoyed it for what it was. It was strong despite it's obvious weakness.