A large majority of the bishops in the US under late JPII and Benedict were awful.  I really don't care who the archbishop of Vienna is because I don't live in Vienna; in contrast the USCCB directly affects my experience with Catholicism.  (Also Schonbrunn was appointed because of the combo of being Ratzinger's student and a sex abuse scandal.)  

The really bad bishops' appointments in the US are as follows - Burke, Cordileone, Sample, Sartain, Myers, Chaput, Morlino, probably Dolan, DiNardo, and Gomez (his flock is getting deported by Trump and he isn't angry enough.)  Need we go on?  The rare good appointment was in a place where there were sex abuse scandals like Boston or where it was a "demotion" like Good Tobin.  But a vast majority of the US bishops are either culture warriors or careerists.  If Pope Francis gave a majority pink slips, it would be a good thing.