Is your home-equity business a David looking to compete with the market’s Goliath banks and finance companies? Consider home-equity credit cards as a way to even the playing field. That’s what National Cooperative Bank did, with its “equity plus” program, offered through its thrift subsidiary, NCB, FSB. “It’s a good example of how a small bank can offer the same services as big banks,” Chris Goettke senior vice president at...