FlightOBN
Indeed! The plane has been stretched to maximum with the 737NG...with a few tweaks here and there...the 737RE is like getting the design into Extra Time...but the investment is massive. The answer is so rushed that the Board of directors has not approved the 737RE...they were lucky enough that American Airlines committed to the program to get it going...let's see if they think this sale is enough to approve it...
Seems that Boeing did not put enough attention to CFM with the Leap X and PW GTF to move on...Airbus always suspected that Boeing was not going to do another airplane until the 2020-2022 timeframe... the NEO is the result of that...and caught Boeing pants down....