Obligatory Note - technique refers to your personal ability to do something, juxtapose your skill levels which makes it easier to have no technique, like an Omega.
Is there a strategic preference for Jita? Does it have some better access to something specific which is why it got so big?
Or is it just one of those “we always done it this way” kind of things?
Bonus question: if its merely most central. Then wouldn’t shifting a hub toward a corner of empire benefit a region of Null?