It would surely depend on whether we were still at war or whether relations between us and Germany were on a more stable footing. Hirohito stayed Emporer of Japan long after WW2. Didn`t stop relations between us and Japan coming on in leaps and bounds after 1945.
The point that I was trying to make (probably in a daft way) is that the past is the past. Learn lessons - yes, but we are where we are and it`s about going forward - not continuosly looking back.