I prefer something that consists solely of text-based reading elements, like a visual novel.
I don't like when mini-games appear, as they tend to break my concentration.
One additional feature I'd want to see is a text-skipping option (to skip text that has already been viewed).
I wish all otome game had gameplay. It would be so fun. As much as I love to read, I feel just straight up reading gets boring to me. I want action. Hence why Tokimeki Memorial Girl side would always be one of my absolute favorite otome game.