Nice colors! Some more, but simpler shops, on the left and right would perhaps add a bit more of that market feel the original stage has. Combined with a ton of bit and pieces all over the places that would be cool.
Update 07 - Since it is my first time making something in Unity it goes very slow. A lot messing around with shaders and trying to find the best workflow for me. Still having a lot of fun working on this. Textures are WIP offcourse
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Not sure about the big wall.