there was alot that i like in the 1997 via 2004 speical edition like

in episode 4 there was scene where jabba the hutt made his actual star wars debut if you think about it lol and its where han told him about getting the money

in episode 5 there was more footage of landos cloud city and also got to see what that alien on hott looked like when luke was captured

then in episode 6 there alot more like anakin as a younger verison in a jedi spirit form footages of different planets around the galaxy when the empire fell the singing verison of jabbas band in his base