Yeah, to me Mos Eisley in ANH felt much more like how a small, dusty little spaceport in the middle of nowhere would really be like.
There was something so much more compelling and evocative about those sparse planets in the OT, compared to how ridiculously busy and overcrowded everything was in the prequels.
Hopefully that's another thing Abrams will try to get back to in his movies.
Of all the things to complain about... Mos Eisley felt smaller because it was smaller and was intended to be smaller. Mos Espa in Episode I felt bigger because it was bigger and was intended to be bigger. I can't see how that makes one better than the other and how anyone would be eager to get back to a movie universe in which towns are smaller.