Automatically?  No.  The Mainline Protestant churches have had married clergy, including married bishops, for generations.  It doesn't lead to stable numbers necessarily-the Mainline Churches have been shrinking for the past 40 years.
Are you talking about ordaining married men or allowing already ordained men to marry?  The first you're already doing win the Maronites and Byzantine Catholics; the second, especially if you then allow these married priests to become bishops, makes reunion with the Orthodox more of a problem.