In my ideal world, you'd break down votes into categories, and need to collect a certain number in each category - UI, stability, usefulness, Finctionality, speed/smoothness, help-file etc. Then if you updated, the votes from the elements unchanged would be transferable. So if you added a help file, you'd keep the votes for the other categories, and need to accrue 2 or 3 for the helpfile.
But adding a help file won't change the actual app at all. Yet all votes are lost for doing it.