to say it first, I love the new update, it sounds like a demo is coming! :3
anyway. . .
workshop city: a few "open areas" will they have any something there? if not it looks empty
route 8: above the 2 trees in the bottom left corner, right before the break between land and water, there is no land "edge"
renota city: the corner of the water on the land is white, it should be on the second layer, and be invisible
purlamp town: LOL I have a village just like that xDDD but mine is more primative, maybe they're distant cousins, all kidding aside, I feel the gym should ALSO be jungle like, if you want I'll make you a custom forest-gym tile :3