Depends on what you define as second string countries. Does South Africa get regarded as a second string country? Because they are going to send their B team to the test series in NZ in Febuary due to wanting most of their best players in the t20 franchise league at the time the test series is on.I don't see that happening much with India, England and Australia where a Test career is still very lucrative, how the second string countries where that isn't necessarily the case are going to compete against franchise cricket is beyond me though.