yes Guran, you have a good point,I have been giving this matter a lot of thought over the last few years, for example on hornpipes there is often three stamps at the end of the first side, it is interesting to try reversing each note ore revsing perhaps two, and then compareto playing the 3 notes in one direction.
i like to play the tune using all three for variation.
I am absolutely convinced that irish polkas,which are in 2/4 sound good with reversing after every pair of half beats with an occasional bar one way or the lead in note of a phrase going the same way as the next pair of quavers.
most anglo players do not reverse on notes of the same pitch, however i think its worth EC players experimenting with changing direction on notes of the same pitch, it doesnt always work,but for some morris tunes, and some other tunes its worth the experimentation.