I'm pretty stoked about the 22 fret, 25" scale Mira. The Mira X and Mira 25th were both 22 frets, but 24.5" scale and alternate woods. The 22 fret, 25" scale all mahogany package was something I have wanted since the original Mira was announced in 2007. Can't wait to check one out.
So, the necks are scarf jointed. I have always considered that to be a budget model only type of construction, something you see on a $200 guitar from China. Simultaneously, when I do see it, I wonder why it's not used more frequently given how much less waste there is in the materials. I have more faith in PRS to make a quality product than any other brand, and if I see this sort of thing on a USA PRS, I'll be damn sure to try one out before criticizing it. Sadly, there are probably hoards of haters out there who would point at that an automatically dismiss it as crap.