Is it just me, or is the Mira shaping up to be the PRS analogue to Gibson's SG? They're both all-mahogany guitars, and they seem to have a similar place in their respective product lines. The Mira ought to be a formidable competitor to the SG; every demo video I've heard so far sounds incredible, especially through the bridge pickup with a little crunch. Great solid rock tone, but with a nice bluesy neck pickup, and some of the best single-coil tones I've heard from PRS humbuckers. Lots of versatility in that guitar without sacrificing basic rock functionality. Of the S2 line, it's the clear standout.
I definitely think the Mira and Starla are perfect fits for this new S2 line. They never seemed to fit in with the core line, always seemed like they were meant for a different market. The S2 line makes that delineation official and puts them at a better price point.