I mean, the first second you see roopit and boopit you inmediatly get the feeling that you havent seen anything even remotely similar. I think its the combination of the pixel art, the animations and the color palette. But thats not the only way to make a game attractive, I see this game, I think of the mother series and I instantly want to play it. Also the riddle master looks unique AF! You are adding all sorts of pintoresque characters so its just a matter of time, this is a much more complex game after all.
Little cut scenes are always welcome, but I think what will make this game truly shine is the story, the weird characters and specialy the combat system. An RPG with a fun story with lots of great characters will stickl in your mind for a long time, but if the combat system is also unique enough you will come back to play it again and again and again!
Man, I love rpgs so much hahaha you touched a sensible fibre with this one.