i havent read all ur suggestions, but I've read the books, and Ive picked up on loads of things that suggest couples.
Harry and Ginny: best friends sister, they get on well, plus itll be like a remake of lilly and james
ron and hermy: I mean come on its sooo obvious
I think draco will probably end up alone by the seventh one if hes still alive, he seems to be a bachelour to me.
and luna and neville I dunno bout that but its possible.
IN A JKR interview she was talking about Hermoine and RON! If you haven't noticed they ACT like Ron's parents!
I still support Harry/Ginny and I found at another forum that JKR had said somewhere that in the end the HERO would HOLD HANDS with a LITTLE GIRL... and Ginny is always described as younger, small, Ron's LITTLE sister...... it makes sense for them to get together and she is only 1 year younger than Harry! 🙂