“Continuity” has never been a word that has been widely associated with the Miami Marlins since their inception in 1993. Only two players—Luis Castillo and Jeff Conine—have appeared in more than 1,000 games for the franchise, only two pitchers (Ricky Nolasco and Dontrelle Willis) have completed over 1,000 innings, and only four managers (Lachemann, McKeon, Gonzalez, and Mattingly) have been in charge for more than 500 games. Directly compare those numbers with fellow '93 expansion team Colorado, and you'll see my point.
The constant and unrelenting turnover has largely been due to numerous ownership changeovers and mismanagement.