haha...
nah, i have an idea though... the edits should appear as a series of sliders, so it shows the original first, and when you slide it, it shows what branches off from it... this way everything stays in context and the "no edits" and the anti-change-after-lots-of-share scam effect is weakened
if people edit, then you just click/swipe left to see the newer versions and it updates the children of that post
also consider the problem that happens when someone mentions a post, and then it gets materially changed like what you talked about... the interface should show the one that is linked, and this could be an after-original update, so if i boost your second version, in my boost post it shows the second version, but if i were to boost the original, it shows the original
retaining the context is really important i think... and allowing viewers to see the old versions is also a good thing, keeps people honest