Thank you so much for the visit! Wow... That is just a crazy number of hybrids you've got! Overall, let me explain what I think.
The good:
-The housing is really linear and neat! It works great as a 'rich' type of town.
-The persimmon trees work great with the gold roses. Also matches your theme quite well.
-Overall, you got the colors worked out quite well... And using Red Carnations with the perfect cherries will help on the the south side, as I suggested.
-The paths overall are nice and clean.
Simply put however, there just aren't many works projects, and it makes the town feel kind of empty and underdeveloped, aside from the hybrids. For for your theme of town, I'd suggest the following ones:
Fountain Statue (Snooty Villagers ask for them.)
Bell (I think Peppy Villagers ask here)
Zen Bench (Cranky Villagers)
Metal Bench (I think Normal Villagers suggest them)
The 3 Topiaries (This could be tricky: You must have a weed-free town on the last friday of april, then Leif will suggest them)
Those are some ideas for you, but should your need other ideas,
this page has all the listed ones available.
Gook luck with your town!