Hmm, lots of sorting out to be done, here. I don't expect Harry had any "master plan" and I doubt all the girls are going to be running to him immediately, but he is the one guy there who's demonstrated integrity and self-control and I suspect that'll make him seem rather more attractive in the aftermath. He may have made funds available for a small party, but he never, obviously, intended for as much to happen as did happen - I noticed he distanced himself with distaste as things developed. I still think the older men, Mr. Weasley, Mr. Delacour, and, especially, Remus, should've had the possession and self-control to not succumb, but since they did succumb they will be paying a penance, likely for a good while. As for the younger Weasley males, it's going to be an intense and painful learning experience. If I was Bill, I'd suggest suspending the wedding and giving me time to completely re-woo Fleur as a demonstration of my real feelings and I'd suggest the same to my brothers; whether or not that offer would be accepted and how long it'd take would be something else entirely.
Still, this is developing nicely and diverging bit by bit from Tim's take on the same challenge.