Something just seems off about the pics I'm finding of the Carrack Class Cruiser. 350 m, 1000+ compliment of crew, and yet with the bridge windows it looks like it really shouldn't hold more than about ten people. But as for scale, it's shown in images with Imperial Star Destroyers at about 1/3 the size. Since the Millennium Falcon is about 35 m, this ship would be about 10 times as long, or over 4'. We'd be pushing the limits of what could really be treated as a ship instead of terrain. What do we expect? This is a Light Cruiser, after all.
The Corellian Gunship, which is merely a Frigate, seems to be a bit more playable size at a 120 m or around 17" in scale. You might not be able to navigate it around the board very well, but at least it would fit on it. Doesn't the empire have any comparable sized Gunships? Putting a Gunship on each edge of the map with the fighters in between would be a lot of fun. Especially if proton torpedoes or other weaponry could have an impact on them.