I have the feeling that all of our hoping for sequels, new series and movies is just wishful thinking. BW & associates have done real damage to the franchise with SGU and their own attitudes. They've allowed it to dwindle into this pitiful reflection of the original movie and series. I wonder what RE and DD think of SGU? What about Glassner? I have an idea what RDA might think, but he's too much of a gentleman to say.
In fact, the franchise has been declining in popularity ever since it peaked with S8 of SG-1 and S1 of SGA, at least according to the ratings and the people who organized Gatecon.
The Stargate magazine has folded, GateCon is no more, even Stargate Fan Awards for fan-created writing and art seems to have disappeared. I recognize that the fans who participate in these things are few in number compared with the general viewing public, but they are a reflection of the general interest out there.
It seemed to me that what I heard about the next SG-1 movie sounded like it was going to be along the lines of classic Stargate (I think BW on some level realizes that's where the money is), and I was really looking forward to that. But I think that, or any other incarnation of Stargate, is about as likely as a snowball in hell.
A complete reboot is what's needed, and I just don't think that's likely. At least not for many, many years.