The article says they're going to be doing a trilogy, so I figure movie 1 will be a retelling of the original movie with 2 and 3 being their original ideas for sequels.
Possibly. The original intent was to do a trilogy, of which the second and third parts were never made. Still, it's not certain yet.
That's my theory anyway, since I don't really see how doing a sequel to a 20 year old movie is viable.
I don't see why not. There were 15 years between Kurt Russell's
Escape from New York and
Escape from L.A. The fourth Indiana Jones movie was 19 years after the third, the fourth Rambo movie nearly 20 years after the third.
Psycho 2 was 22 years after the original.
Tron Legacy was 28 years later, the prequel to
The Thing made 29 years later.
There are many other examples.
Besides, the Stargates have been around for thousands of years, so you could certainly do a story set 20 years later. And Kurt Russell and James Spader are still around. As I mentioned, Russell has experience with coming back to a role after a long gap.
Especially when that sequel is going to ignore the continuity of the TV series which is the primary reason anyone still remembers that movie today.
Well, either way, it's going to be a divergent continuity from the one most audiences know, so that doesn't rule out a continuation from the movies.
Really, Devlin's been trying to get his pet sequels off the ground for so long that I have trouble believing he'd just abandon them now in favor of a wholesale reboot. If they'd gone with different creators, then I'd believe they were rebooting. But they went with the original filmmakers, who we know have long been eager to get back to the continuity of the original film.