Thanks for taking the initiative on this.
"Selections From?" That's a bad sign. Just look at Hal Leonard's less than masterful rendition of Megadeth's Selections from Peace Sells.
I'm going to lobby the them for a full transcription of the album (in two books). Let's be honest, this is not the most challenging guitar performance for them to transcribe. If Alfred can handle Octavarium, and Warner Bros Publishing can knock out Six Degrees without issue, then Astonishing can be published in its entirety.
Further, an abridged publication would diminish JP's overall vision and presentation of the story.
Otherwise, Hal Leonard may not be the best suited for this project and DT should make a deal elsewhere.