Great question. My philosophy on your point consists of the main infrastructure of the team/organization and even goes to the culture of the city/region. For example the Steelers have a pressure to preform and excel based on the non transient nature of their community. Pittsburgh demands that the teams play a certain way and that their perform at a consistent high level. There is a pressure to always beat a high level similar to the fan bases of the Red Sox, Yankees, Packers, Alabama etc. If one doesn't preform at the level expected you can expect wholesale changes to be made to get to the expected level. Teams on the opposite end of this spectrum are the same in a negative way based on the lack of expectations and public's apathy Marlins, Coyotes, Blue Jackets, Cubs, Padres, Jaguars,Cardinals etc are some examples. This is also why a NHL team in Vegas will never be a overall success, not enough demand for excellence by the ever so transient fan base.
So to answer your question as long is their is not a dramatic personnel and/or organization shift the teams usually perform year in and year out very consistently. With every outlier you can expect a regression to the mean the following year (good or bad).