'build cards' could display icons of the platform-combinations that failed in the build. so let's say the build fails, and all the tests that failed are IE6. Then there's a little red IE6 icon on the card. If only windows tests failed but different versions it might just be a red windows icon. If it's multiple platforms then maybe it just shows a little glyph of generic browsers
cus whenever a build fails, our top questions are "what test failed" and if more than one test failed the question is "is it a specific platform?"