Originally Posted by
Larry in TN
I don't know if that will ever happen but, if it did, they wouldn't be 76 seaters anymore.
The only reason the E-175 has 76 seats is that it is SCOPE-limited to 76 seats. They put 12 first class seats in it because of the extra room. If configured for mainline, there would be no limit so they'd likely trade six FC seats for as many as 12 E+/E seats. That would put it up to about 82 seats. That would help a little bit with the economics.
You are most most likely correct and with the fuel efficiency of those 175-E2's it could be a CASM machine.