I say give it a chance. We're getting some character development here that otherwise would be missed. Plus, the writing is a lot better than the first series' filler episodes. I know most people generally hate filler just because it's not part of the main storyline, but this one isn't so bad. The villains are interesting, and I'm intrigued about what's going on with Sora.
The dynamic between him and Naruto is interesting too. But I can't imagine Sora still alive at the end of this arc.