As SLF I shall post here even if it's not really an SLF thing.
As we all know by now, the "problem" with the 737 is that the wings are too close to the ground to fit modern fat high-bypass engines.
Therefore a simple solution is to make the landing gear longer. And this it turns out has already been done for the MAX-10:
https://www.geekwire.com/2018/boeing...-landing-gear/ Why wasn't this done in the first place? Why is it not done now?