Private mortgage insurers would welcome the return of conventional 97 percent loan-to-value mortgages from the government-sponsored enterprises, but analysts say it might not be a slam dunk. The private MI industry has been encouraging the GSEs, particularly Fannie Mae, to bring back the 97 percent LTV product to compete with the FHA’s main product, which requires just a 3.5 percent downpayment. For years, Fannie offered...