kill filter-branch --remap-to-ancestor?

I had some headache with the issue to which the cure is the "--remap-to-ancestor" option of git filter-branch -- back when "--remap-to-ancestor" was not yet (cf. http://thread.gmane.org/gmane.comp.version-control.git/112068/focus=112838). 

This time, in a similar situation, I had some headache with finding out that the panacea is already there and it's called "--rema
p-to-ancestor".

Why not cut back on complexity and get rid of "--remap-to-ancestor" while automatically enable the implied behavior for filters including a path? This was already proposed by Junio and the author of the option had no objections against this idea (see
http://thread.gmane.org/gmane.comp.version-control.git/130949/focus=132684).

Csaba