Really? What everyday people? Scientists, ancient experts, military personnel? Everyday people aren't wandering around off-world bases. They had plenty of opportunities to advance the mythos but they didn't. That was the problem. If you actually compared how much more we learned about the mythos in a year and a half compared to even a few episodes of SG-1 or Atlantis it's a joke. There are problems that would be solved in in a couple of lines of dialog in SG-1 that took episodes to work out in Universe. That was the problem. That is why we never really got anywhere with the mythos. We got a few superficial things, but not that much. Let's not forget how they covered the first alien building they came across in a montage. I was finally expecting something and it was another failure of an episode. Being a departure is not a problem. Mostly ignoring the franchise is the problem. A serious stargate show can be made with character development, and the occasional boo-hooing that seems popular with this show, but that can be done without ignoring the franchise. This show clearly really wanted nothing to do with the franchise and only used the name in some attempt to get some fans to follow it.
Eventhough I personally prefer a faced paced storyline. I would have tuned into a character based SG show had they made the characters remotely interesting (see B5 and STNG).
Another problem with the show was it didn't seem to have any direction. They just floated from planet to planet gathering resources and whining about their personal lives. It's like they decided to remake my least favorite scifi show (Star Trek: Voyager) and fill it with even more less interesting characters, full of scifi cliches (The last starfigther type geek, Captain who doesn't want to be there but is thrust into the situation due to circumstances beyond his control, the brilliant scientist who can't relate to others, etc).