It seemed to Wayne Sadin, CIO for Aegis Wholesale, that this year’s Mortgage Bankers Association technology conference was sporting a lot of new loan origination system vendors. Last year, he said, the “app du jour” was automated valuation products. Sadin remembered it used to be that “old guard” vendors had an install base, references and a solid business model. This year, companies that were looking to make their first loan with their new LOS were…