Trouble with Harry pursuing Hermione (or Ron) is that it’d diminish the odd one out. Prior to HBP, there was Ginny infatuated with Harry, but mostly “Ron’s sister” back to her. Early in HBP, Ginny gave Harry cookies made “just for him”… rest of the book had poisonings due to bad batches of love potions to others, so yeah, IMO, Ginny drugged Harry up, and I’m guessing with Molly Weasley’s help. I even poke fun at Ginny’s infatuation in the explicit version of my fanfic
Speculating where the author will take the narrative in the next book is fun. When I was working on my fifth year story, JKR was dropping hints to book five, and yeah, I made a guess, and TBH, I think mine’s better in some ways, more impactful.