The argument for:
The score for Star Wars, having been composed before any of the other films, lacks many of the themes found in the other films, themes which, had the films been created as a whole, would certainly appear. As one of the goals of Revisited is to make the 6-Film-Saga work well together, it is only natural that the score should be adjusted properly. The most notable "missing theme" is the Imperial March/Darth Vader's Theme, given the heavy Imperial presence in this film, but Battle of the Heroes is particularly fitting for the final meeting of Obi-Wan and his former pupil.
Viewers of the Revisited Saga may be surprised to hear these themes in A New Hope, as 1977's Star Wars is a beloved film to which they may have memorized every note, line of dialogue, and image. The changes may even be offputting at first, resulting in a poor reaction. However, if the goal of Revisited is to make a 6-film saga, then their insertions are appropriate and even necessary.