British and austrian politicians (also their monarchs) were smart enough to not enter this war.
If France and Prussia just weren´t fighting about Alsace-Lorraine maybe the terrible WW1 with all its consequences would have not happened since this very region was the french demand and cause for ww1. But without this "battle for germany" a united germany without austria wouldnt have been created. Maybe this would have also been better since nationalism only got stronger afterwards. In the end one can say:
War is never a good ideaThey just should have been peacefull like the austrians with all their parades and stuff
But hey, that´s just my opinion