I have 0 idea about the Kuro games, but Sky 3 is a banger, even though it was made with a shoe string budget and it shows. And Ries is perfectly fine, she's certainly more rounded than half of class 7. I expect Reverie to tie a lot of things with a neat little bow kind of like how Sky 3 did. As long as ti achieves that and sets up for Kuro, I'm fine.
EDIT: Also, does anybody know if Reverie uses a limited Bonding Point system? I played all of Cold Steel with NG+ saves to have infinite Bonding points and not have to save scum to see all the scenes, just wondering if I'll have to do that with Reverie again or not.