One thing that kinda puzzles me. Is this the first Peanuts movie that actually has the word Peanuts in the title? In the past, it was always "Something Something, Charlie Brown!" or occasionally Snoopy. Maybe they're thinking, "Oh kids won't know Charlie Brown." But judging from the reactions from that kid's video a few posts back, kids do seem to know who Charlie Brown is. And in any case, what makes them think unknowing kids will be attracted to the word Peanuts instead?
Peanuts is basically the title for branding sake. However, that's just the American title. Strangely enough most foreign titles actually have Charlie Brown or Snoopy's name heavily featured in the title. Japan basically blows them away by calling it (wait for it) "I Love Snoopy" (or something to that extent). I believe there's an international title that has it called "The Charlie Brown and Snoopy Movie", strangely linking it to the unrelated TV show from the 80's. That said, were there ever any TV specials that didn't use Charlie Brown's name in the title? Especially the ones where he was barely in and they almost exclusively featured Snoopy.
You know, about the jazz soundtrack, I'd love to see them use that, but I don't think any of the movies used similar music to the specials. Snoopy Come Home had more of a traditional animated film score, as did Bon Voyage and Don't Come Back. Can't remember Boy Named Charlie Brown and I'm not sure about Race for Your Life.