I guess I don't completely agree with the rationale, because I've never 
wanted this feature; when running tests en-masse after refactoring, I 
want an overview of what was broken.  If the codebase is in good shape, 
the test failures will be few and close together, and then I can usually 
re-run one of the individual test cases to debug the error.

However, this isn't a big issue for me, and if someone's willing to 
prepare a new patch with the different implementation I described 
previously, I'm happy to re-open this ticket and sign off on it.  I'd 
suggest using the same argument names as nose and py.test in this case.