Obviously. This is the way they would see it:
Hermione - Mudblood
Ginny - Blood Traitor
Luna - Too Quirky, and she might not be pureblood

I voted Ginny because I wasn't sure whether Luna was a pureblood. I ruled out Hermione because she's a muggleborn and Fleur because she's not exactly a pureblood either since she's part-Veela. Ginny might be a blood traitor but she's at least a pureblood. If Luna was a pureblood, I think they'd prefer her.

Hermione - Mudblood.
Ginny - A WEASLEY (I think that is all they would need to know).
Luna - Crazy.
Fleur - Might be part Veela, but at least she's an aristocrat (I think). Also rich.

P.S. - That is what I think the Malfoy's would think not my opinions.

next was fleur
then ginny
then hermione

Fleur-Luna is a pure blood though!

Fleur. They would love her to be with Draco.

^Yeah.

She's prissy. She seems well off, and would most defiantly meet their standards of snobbish-ness.

Exuse me late comment but
What is the name of this club???
DRAMIONE!!
I know the Malfoys won't prefer her and definitely take Fluer but......................Maybe his parents let him pick and he picked: Hermione!!
Maybe just maybe they would agree!!

We are talking about his parents not him!!

Fleur...She's pureblooded (I think) and would be most appealing to his parents then Hermione, Luna and Ginny. But...

HERMIONE FOR THE WIN