In all honesty, I'd be completely down for something along the lines of Stargate: Atlantis But Good.
Ah, in that case what we're talking about is DS9.
Seriously though, for me the main appeal of each of the SG series' hasn't been the setting or the premise it's the characters. SG-1 had an almost perfect dynamic between the principle characters, while SGA was a little more uneven with McKay being the only one that was consistently entertaining.
SGU was (by design) an almost entirely different beast from the other two, not because of the setting but because of the tone, style and type of material they were tapping into. Mostly leaning on much more mature themes and interpersonal issues than either of the two previous shows could ever even get close to.
As a result it was a mixed bag because the "need" for almost constant personal drama and tension meant that certain characters were just plain unlikable, others were inconsistent, and one or two that really should have just been killed off and have done with it.
I say this by the way as someone that very much enjoyed SGU, despite it's many flaws. I honestly think that had it got a third season, it would have finally found it's stride, but unfortunately it rather squandered it's chance. I have no inside knowledge so I'm not saying is was necessarily the case but I got the impression that the show was trying just a little bit too hard to follow in footsteps of the likes of 'Lost' and BSG. It was always better when the show was allowed to just be itself.
So for a new show, I would like to see a delivery on the promise that SGU showed. The setting doesn't matter all that much: a continuation of the Stargate Command story in the Milky-way, a second show set in Pegasus, or some expedition out into the universe (maybe following the path of the Destiny, with the thousands of unused gates the seed ships left in their wake.) It makes no real difference. I just want good, well written characters and entertaining stories.