I would have loved to have seen Carter with McKay I figured she didn't make an appearance cos of the continuing character copyright thing (not just AT's availability)
In addition to the things other people have mentioned, what I'm wondering is, it seemed that one of the major tip offs for everyone was that sudden "obstacles" appeared to prevent them returning to Atlantis. Seeing as the whole thing was created by their own minds, why would it make any difference if they are "living" out their lives on Earth, or in Atlantis?? Have I missed some reasonable and obvious answer (it's been known to happen! ).
I did enjoy it overall tho. Poor McKay still weird seeing Narim.....er Simon Guess this puts the kaibosh on any more Tollan arc - talk about confusing!