Yeah, although from the list of ideas I got the impression that Atlantis-on-Earth wasn't meant to be permanent, at least if there was a S6, since the episodes seemed to (mostly) require Atlantis to be in roughly the same spot. So maybe Earth would get a little bit nervous about an alien city that has the occasional tendency to having plagues break out, signals going off alerting aliens to come get lunch, or coming within a commercial break of completely blowing up (and what with being full charged with 6 ZPMS), and would decide "hey, maybe it's better we keep it off Earth after all". And then deciding that somewhere else in the Milky Way would just make it more likely a bunch of aliens would be after it, so they send it back to Atlantis, where the only technologically advanced race around is the Wraith, who are at least somewhat of a known quantity. Or maybe some other reason would be found to send it away.

I think my favorite of the episode list was Yesterday, Today, and Tomorrow, with McKay in a puddlejumper travelling back and forth between 5 years in the past, the present, and 5 years in the future. I'm not super big on Time Travel episodes in general, but its sounded like it could be cool. Plus the return of the Evil Asgard, but that wasn't so much a fully fleshed out plot as sort of an inevitability.

And yes, Steampunk is great. If I was a billionaire I would totally decorate one of my houses as all steampunk! ;)