Hey, by the time you reach 35 -40 years old, if you have watched much scifi or tv in general, you start to see how much stuff is really just redone, but you sometimes get to see it redone really well, those are the moments worth waiting for.
The ascended Ancients are the Q Continuum, playing around with the fragile human species - with the power to help and protect them but unwilling to do it. The Replicators are the Borg, running around trying to assimilate everyone and everything else.
The card game at the end of SG-1 was done many times on TNG, although the Captain didn't join the game until the end of the series (I hope that's not an omen for Stargate)! And you talk about the spaced replicator? done before on Stargate, done before on TNG (Lore), done before on BSG (Leboim), been there, done that.
But it was still an enjoyable episode. The Lego city was a big surprise to me, and I liked it, I always did like legos! Actually, I still do, it's the kid in me! I really thought they had escaped and that Atlantis was being destroyed by the wraith - even though I couldn't understand how that could happen within the show. They did such I good job they had me believing what I knew couldn't be true. A real taste of "doublethink," scary stuff.
I liked the little argument between Sheppard and McKay over time? time? how much time? Sheppard always wanted a solid number, if you know anyone like that then you know just how annoying it can be! I also liked McKay's line, "There is nothing more annoying than people who won't admit their own mistakes!" A little life lesson there for us along the lines of the thought that we all dislike most about others the things that we see as faults in ourselves - and we all know that McKay can't admit his own mistakes!