I don't disagree with the trying to make Mos Eisley larger....it's just the way it was executed. They may have used physical models, but to me the scene doesn't blend with the rest of the movie, beforehand (apart from the Shuttle, Dewbac & CG troopers) any CG improvements work well, the hovering speeder, the sandcrawler etc.

The Mos Eisley just has a 'new look to it', the high jib shot of the port isn't too bad but the speeder heading up the street with the CG Troopers,....I dunno, Its maybe just me.