Look Dark, I just don't think anyone should have the right to tamper with the author's final work. Allowing that implies someone can claim the abridged version is more appropriate in certain circumstances. If the author chose certain words and a certain level of complexity, perhaps he did not adress to children, or perhaps he intended the reader to make a certain effort. There are plenty of people eager to write for 8 year olds, and there are even older writers accessible to them (Jules Verne comes to mind, Dickens maybe).
In fact, I don't see any reason at all to buy these modified editions, unless the information is cleverly withheld or if there is a cultural undercurrent suggesting to certain people that this is the "proper" version to read. Social restraints are enforced through culture as much as they are by a state's police. One has to wonder why would anyone feel the need to read a "chastely revised" Lolita.
There is also revulsion against the people who are arrogant enough to think they have the intellectual prowess to not only perfectly understand the author's work, but correct it and adapt it for certain age-levels!
That these people are considered distinguished professors, and get money and praise for these works, is just wrong.
I understand your intenetion is just to invite at a moderate view, but I find it hard to belive anyone would condone this.