Can't say I'll be sad to see it go. Here's hoping that Joe Flanigan, Connor Trinneer and Robert Picardo can get on better sf/f shows quickly.
There are too damn many really excellent genre actors who aren't on good shows.
Mallozzi, the "Atlantis" show runner, has stated in his blog that five years may be the limit for franchise shows in the future. He cited the fact that the rising Canadian dollar versus the U.S. dollar is becoming an expensive way to make Vancouver-produced shows like those in the "Stargate" family.
The ratings were decent, so it must be the exchange rate that was the nail in the coffin. This will start impacting other sf/f shows in Vancouver. Maybe they can get some decent credits in New Mexico or other inexpensive places? How about Utah, that's some stunning scenery and it can't be that pricey.