And I stand corrected.
Traditions have been broken in the past...and will be broken in the future.
It would be a radical realignment (based on geography) and very unlikely to be passed. I know there is a thought that in some places/areas that have both AL and NL (ex. NY, LA Chicago, Bay area) that every team comes to town in the current format. IIRC, there will be added PO teams coming in a year or two.