LOCATION OF THE EMPERORS TOWER:
Having the tower in some non descript place on the Death Star felt out of place in JEDI. If the man is going to create a “high tower” to gloat over his enemies, I would imagine he would pick a place where he could not only see the battle with the most clarity, but also a place that would be highly protected. What if the Emperor’s tower was at the center of the laser dish array? Imagine the panic on Luke’s face (and our own) if you could see either the beams or even just the green of the beams outside the Emperor’s window as Luke fought Vader (so he/we are constantly reminded of the short amount of time Luke has to stop the Emperor).Isn’t it just at the north pole of the DSII? That’s not exactly nondescript.
The movie does nothing to convey this, unfortunately.
The Emperor’s gesture when he points upwards to the sanctuary moon, and Luke’s following gaze, suggest they are well south of the North Pole and probably on the Southern hemisphere. Unless gravity on the tower is backwards and they’re actually standing on the “ceiling”. The lights on the elevator do hint at it traveling “up” to that room though.