I just got back and I have to say that your town is coming along great! I really love that brick pathway. I used to use one a lot like it and it's so pretty. I did read someone else said your PWP placement is perfect and I definitely agree with that. I love the fact that your villagers are spaced out. Neighborhoods are great, and I do them myself, but having villagers spaced out makes the town feel fuller in all areas. I'm actually working more on separating my villagers now with plot resetting haha. Ok that being said, I worry that if you do move someone out, someone else will move in and plant themselves right on top of your hybrids or bushes. I've had it happen countless times myself! Soo I would either recommend plot resetting or moving your hybrids to the beach before someone else moves in. With the bushes, I recommend putting lots of QR codes around them to protect them from a villager moving on top of them. I like the garden in front of your train station. I might see if you can put a bench or something else that is 2 spaces wide right in the center of it! Or a park clock or something of that nature! That will protect it from a villager too. Then maybe put flowers or a stone pathway with mushrooms/clovers leading up to it? I love the bell with the two flower arches next to it! Soo cute. I would just add some more to that area, like surround it with trees and add more flowers to make it a little more full. You definitely have a knack for making cute gardens throughout your town. I loved the tulips with the rock custom sign that you made. Very unique. It looks like you are well on your way even without time traveling. For inspiration I would check out tumblr (I've found lots of cute pictures on the animal crossing inspiration board) or the dream address sticky thread here and find some ideas you can use in your town! I hope this helps!
Editing to add that trees surrounding the plaza and the train station/garden would be a nice touch too.