The Federal Housing Finance Agency and its wards, Fannie Mae and Freddie Mac, want to change servicer compensation to provide more resources for addressing nonperforming loans and try to reduce consolidation in the market, but MBS analysts remain concerned that fiddling with the current system could derail the to-be-announced market. “A big concern is that the TBA market for mortgages is very fragile,” said Jim Gross, vice president of financial reporting and public policy at the Mortgage Bankers Association. “Making radical changes could further rock the market.” The more radical proposal outlined by the...