I would prefer to have it by default with a flag to disable it, since IMHO the full list of passed tests is just noise, but other devs don't seem to like the idea.
Another option would be to save the flags in a config file or in an envvar, so that it won't be necessary to repeat them every time, but that's another issue (and on a related note, people don't seem to specify -Wd either when they run the tests, even if they should)...