US regionals have no use for the 100 seater when scope restricts them to less! Think about it, why would a regional buy them over the CR7 or CR9 when they’re restricted to 50 (CAL), 66 (UAL) or 76 (DAL)? We fly the CR9 and when fitted with 76 seats it has plenty of performance, very very few weight or cg issues and the fuel burn is still justified with fewer seats. Why buy the CR10 if you can't add seats in order to offset the increased fuel burn.

Only US Airways (that I know of) has scope high enough to justify a regional purchasing this a/c; but I wouldn’t worry about Parker letting the cat out of the bag seeing they are now operating E-190’s and at regional pay rates to boot.