So we're agreed that ten years is too short? Personally I have no problem with it lasting for the author's entire life, I think we gain more than we lose by that. And perhaps ten years beyond the death of the author (not to be confused with the Death of the Author) just so there isn't an unseemly orgy of cut-rate new editions every time an author dies.

I do agree, though, that the copyright term should be set sensibly and never changed, and not regularly extended at the behest of Disney. That's a real problem.