The best solution would be to leave a few rows of E+. If this is going to be a domestic bird, and the point is to shuffle people around between hubs. For everyone saying they would book away from it, we have someone who would prefer the 777 over a 739. I book away from the 739 now. I will fly it for an hour, but will not fly ORD-SFO on those things. I'll book a different airline or work with my times to find an airbus, which now is awful, or a 757.

People are complaining about .3 from the next option which has taken most of ORD. EWR, SFO/LAX flights.

I would rather have the option to fly mainline to RDU, ATL, AUS, SAT, DFW, than worry about that .3 of space that I will lose from flying the lovely 739 over the 777.