While I enjoyed them, I actually found the other two shows to be more shallow.
You may mean shallow as less meaningful in the personal interaction. I mean SGU is actually morally shallow as a show but on top of that the characters aren't being developed at all.. It caters to the negative humanism.
What is meaningful?
Meaningful is...issues like Jack's son death by his own hand gun. Meaningful is Teal'c having the balls to stand trial for his atrocities. Sam wrestling between her job and love, not to mention the countless decisions Hammond had to make that truly walked the line between insubordination and morality.
I've never seen SG-U or Atlantis impossibly explore up close an personal the effects of a stargate connected to a black hole with such dedication to modern physics. Time travel through solar flares, who can forget SG-1's ground hog day. What about the archaeology that was almost in every single show, you've no idea how much of that was actually real.
I mean somehow you missed the depth of the show because it was entertaining and funny but it really did hit on all cylinders. And to look at SGU as though it's doing even marginally as good is mind boggling to me.
I've read deeper stories than this. Try reading Xenocide or Foundations waiting for the ball to drop...but it does and when it does...it was mindblowing and SMART. I can't say that for SGU. I don't it taking it's time. What I mind is it wasting my time.
What was the purpose in learning about Scott's past in a Church? It was just in the middle of and episode like it meant something. Why did we spend so much time with Young and his wife? It amounted to nothing...and it's repeated over and over again.
85% of what we see on screen should be dedicated to the plot but we've had entire episodes of FILLER that have nothing to do with the situation on Destiny. They spent too much time developing relations on Earth that have nothing to do with Destiny. They should have spent that time having the characters on Destiny interact.
I'm telling you this because this is why the show is doing badly in ratings. It's not because it's slow, it's because it's been slow and pointless.
TI love that SGU is taking it's time, but I can understand why it's not going down well with a casual audience. The title doesn't help either, if you go in expecting an action pay-off in every episode then you're going to find the show coming up short when the real pay-off is the impact on the characters, and that aftermath. I'm unsure where I'd rate SGU among the other shows, I don't think it tops SG-1, but for the most part I find it more compelling than SGA, and I if they're to make a movie, I'd rather have one to wrap up this story when the times comes than Atlantis, and I don't think SG-1 really needs one.
Yeah, right now SG-U doesn't even have a cult following like Alias. And worse I think the SGU-sucks compaign and a remarkable effect against the series because it was targeted at the fans so the Fans are now divided and the general public is show what I would call an "understandable disinterest"
You can't blame people for not wanting to waste and hour of their time on what may or may not be revealed in SGU when they can get much more entertainment out of dozen other shows.