Yes, "the big picture" was a term that generally made me very, very wary; too often it neglected those details so important to those actually doing and to the overall success of whatever was being attempted (I've heard it in industry enough times - we ended up pronouncing it sarcastically with finger quotation marks). I'll agree that Albus seems more concerned for the Death Eaters, I think it's part of his "pureblood" background where he's more concerned with preserving purebloods and their families than in taking care of their first-generation or "half-blood" victims; this could explain his close relations with and strong concerns for the Weasleys. I'm inclined to suspect Adromeda Tonks as one of his proxies as she's a daughter of the Black family and likely has the proper training and preparation; depending on just how Dumbledore-olatrous he is, Arthur Weasley might also be a good choice, assuming he gives a magical oath to vote as Harry would wish, not as Molly would wish.
Author's response
I'm in agreement. "the big picture' and 'it's a team effort' both mean the same to me.
Andi will indeed be one of Harry's proxies, but Arthur, will not.
There are three reasons. First and foremost, he in under Dumbledore's thumb, either directly or through Molly. Second, the blood-purists, (as opposed to purebloods) despise him. He's covered in ...gasp! POOR! He has no political influence and as such, isn't worth any of their time. (I HATE politics!) Lastly, I like Arthur. He reminds me of me. If he were in a position to oppose Dumbledore, he'd likely suffer a 'fatal accident'. Dumbledore does not like it when things don't go his way and he isn't loathe to using underhanded methods to get what he wants.
Alorkin