Whats the format of the model ? ... maybe, if it has the UV-layering there, you could extend the texture-size and do something about it anyway ... But its still nothing to go land the Normandy in. The insides could be fit like the Halo-cruisers doe. - I haven't used some procedural urban creator, but if one could do a tuned city-district at least in exterior form - there could be done a reasonable big model of the citadel anyway, whyle maybe hocking up the insides onto it so you could land the normandy and go take a walk too. But it would be a larger concept art model project there. But if sections of it would have different LODs too, it would be nice and maybe doable in its realistic scale. (i think it was something around the Spain-width ?)
You remember that Sovereign was bigger that the class you could fight on the ground in MEIII - and still was just big as the boarding-stick of the citadel.
Now seeing it again, it seems that some scales may be wrong in the vids - Normandy isnt as big when you roam the insides. :/
Yeah walking in the Normandy was nice but it felt way too small compared to how it looks there. Then again the SR-2 as evidenced by the models here is about twice its size, now walking in there was fun, but I miss the Mako and the airlock sequences in the later games "Stand by, shore party decontamination in progress".
Perhaps a fairly large model of the citadel can be made like you said, and that would be seriously amazing, along with importing the interiors that we see from the games.. wow that would be something.
Nice pictures, Planets! 
I didnt actually rip those models, I just downloaded them and imported to Outerra. Generally though I find "NinjaRipper" to be a most effective tool for getting models out of games 
Glad you like em! Can't wait for Mars to release so I can pose SR-2 in orbit there.
Do you know if there any more Mass Effect model available from where you downloaded them? Right now I have this idea in mind to see if any of the already ripped Mass Effect models/props that people imported into XPS Lara posing studio, can be re-imported into Outerra, if so then theres a virtual plethora of potential Mass Effect models ranging from mundane props to spacecraft and rovers that could potentially be imported but I don't know if that's even feasible yet.
