brainhurt
What are you other WLers doing as far as sending additional materials? I'm working on a combined "restate and clarify my career goals" and "reiterate my keen interest in YSOM" essay.
Also, it seems that the vast majority of WLers were interviewed before being WLed, but I wasn't. Any theories on what this might mean? Something? Nothing?
If you were waitlisted without interview then you should also request for interview. I donno what it means to be WL'ed without interview but you can ask the admission consultants forum on gmatclub, they would know better. From what I've heard retaking GMAT or a promotion at work helps but only if your profile is weak in these areas. HTH.
I do not think the op has any weaknesses in those two fields GMAT 780 and WE seems pretty good.