well I'm not sure about the other Scorsese-movies, but the ones I have are not particulary famous for it's additional features of any kind, apart from a digital version of the movie.

The extra's on Gangs of New York are great but are almost all related to settings, costumeds, production design, music etc.

I really hope a special edition contributes something to what we already have. It will the first (and so far only) movie of my current collection I will be 'rebuying' if an improved version releases..