Complete agree, soon as Jack left they sort of just had to replace him, shepard and Mitchell are currently too similar to each other not to mention to jack.
Atlantis I feel they just templated SG1 and yeah the Wraith are definatly like the Gouald, in fact didnt they say the Wraith are a race spawned from a parasite.....
Looks like they took a winning formula from SG1 and just spinned it one more time
While Both shows still good, Atlantis im glad they ditched Ford.. I could see him quickly becoming Ensign waymeaver/Red shirted bloke that dies at beginning of each trek episode. Instead they gave him more of a charactor. Ronan could be Teal'cs Brother just had to throw that in there !
Replicators original enemy? No there not lol the writers just stole that idea from Treks "Borg" doesnt assimilation spring to mind? they assimulate your technology and take over your entire planets.
Stargate/Atlantis has been stealing ideas from Trek episodes/ideas for ages, the writers praticaly admit it.... that one episode of Mitchell waking up from a dreamy dream where hes killed a woman and it involves mind grafting, that whole episode was identical to a Voyager, Tom paris episode where the same thing happen to him !
You dont even have to belive the above look how many Trek actors have appeared on Stargate, I think the only person that hasnt turned up is Captain Picard
SG1/Atlantis still remains the best sci-fi fix