I just found an interview between both Nakazawa and Uchikoshi for the Infinity series in general. When they got to the Remember11 bit, they said something I found rather interesting.
Spoiler for Major spoilers for Remember11 and Ever17:
Apparently, they wanted to make Remember11 as a sort of "anti-Ever17". By that, they meant that instead of a story where the player overlooking the game's world guided the protagonists, they wanted to create a story where the player wasn't necessarily a "good existance" to the characters, where, depending on the player's decisions, tragedy could strike them. They thought it'd be an interesting idea for the player to become the enemy of the characters. They specifically call the story a "story of endless revenge" in regards to the characters. They go on to say that to the characters of Remember11, us players, who are "beings of a higher dimensions", would be akin to godlike beings in their universe. In that case, they say, Remember11 could be considered a story about "defying god".