Something like Yamatogawa's Power Play and Tayu Tayu, or Distance's Girl's Lacrosse Club, but with swapped genders.
It's common to see gangbang hentai, lighthearted and dramatic, with different aesthetics for the guys (fugly, obscured, bishonen). But I think I've never seen one where the girl gets to do it with different guys as they're presented by chapters until reaching the group stuff, It adds a certain flavor seeing the protagonist's chemistry with each character individually and the buildup of waiting for the next chapter with a preview of the suitor that will follow. I'd like to see that to actually feel she's doing it with guys instead of... just doing it with talking penises.
UPDATE: I found one, The Great Escape XXX. It is pretty graphic, long running enough, and the guys are fleshed out enough to not just be another sausage... as much as your average hentai waifu anyway. Still, I feel something of bigger quality can be done nowdays.