I don't play mobile otome games anymore, but some I played when I was a kid that I'd like to be able to actually finish someday are the Shall we date? games and some less popular games like Sweet Scandal and Prince of Monaco. I did also enjoy Midnight Cinderella as a kid, and I've heard a lot of good things about the Ikemen series as a whole that would make me play them if they weren't F2P mobile games, so if they could somehow rework those into a full console/PC release (probably PC because if I remember correctly there's smutty text), maybe restructured to be like a "normal" otome game in terms of mechanical flow, I'd be all over that.