Isekai Meikyuu de Harem Wo isnt a masterpiece story, but Roxanne as a character is a masterpiece, imho. She's the center of attention and main attraction of this story. I feel the author puts many thoughts when creating her character while the other fours are kinda like background singers.
The purpose of Sherry isnt her beauty, but her skill and mercantile knowledge as dwarf for Michio party. Miria is the closest, second best from Roxanne. Vesta i think is too over, thr author just threw a big woman in there and thats it. And the last girl isnt even attractive, its just thr story tells that 'she's an elven noblewoman and she's beautiful' but she's bland and plain.
It's only Roxanne for me, and maybe Miria too.