There are some really great insights here from Callahan & Associates (creditunions.com) – key metrics and considerations for CU’s (and community banks) as they look to develop, enhance, and grow their credit card portfolios:
“Credit card lending among credit unions is growing and reaching more members. To develop a successful credit card program at your credit union, pay attention to these key metrics.”
http://www.creditunions.com/blogs/graphic-of-the-week/7-metrics-to-evaluate-credit-cards
There’s a good downloadable PDF / graphic link at the bottom of the article (included here as well).