Since every airline has jammed more seats in coach that's not going away. Maybe more MCE but that would take years to complete. AVOD/IFE would be hugely expensive and it would be hard to achieve a direct ROI although it helps with overall brand image. More realistic turn times are surely needed. I have a SAN/CLT A321 flight next week and the turn is scheduled at 50 minutes. No way to turn a plane that quick that's coming in from a five hour flight. Therefore on the other end you would not want to take a connection less than one hour, preferably 1.5 hours.