I'm really looking foward to TESB 97SE comparisons. It will be interesting to see if Vader has a pink lightsaber when he points at Luke while he is next to the Carbon Freezing Chamber pit - that part in the 2004 SE looked horrible.
Also, another thing that would be interesting to compare, is whether the blue tint on planet hoth is similar when comparing 97 SE and 2004 SE.
Can't wait!