Firstly my I say to all aspiring fan editors out there, you must check this edit out. There's a lot that can be learnt from it. I must admit I was expecting more of a highlights package but what ADM's put together works remarkably well.
I think this edit does better things for Superman III than it does for part IV. Redeemed shows you that some really good material and performance were shot for SIII, only to be degraded by the silliness going on around them. Whilst Superman IV isn't exactly rushed through here, the editing just doesn't seem as slick as the handling of SIII material. This is most notably due to the audio.
Take the UN scene. Obviously ADM wanted to get rid of Lacy and her father, so the scene where Lacy says "What's he going to say", to which Lois replies "Something Wonderful" is cut. This triggers an abrupt cut in the audio that highlights the edit. Perhaps the audio could've been aloud to play out over a shot of the UN audience. You'd still hear the dialog though at least not see the faces.
Getting the audio right is extremely important as you don't want to draw attention to where a cut is made.
One thing that bothered me was using the SII deleted scene for Lex’s getaway. It just seems it was used purely for the sake of utilising the footage. It doesn’t really improve the film and just creates a few small holes.
Here we have Eve bust Lex out, only for her to disappear, then when we get to Lex at the museum we have Lenny tagging along. This character hasn't even been introduced, he just appears out of nowhere. Also when Superman drops Lex back into the hands of the authorities we have fellow prisoners whistling Mozart, which is now rendered insignificant.
Just one more thought, perhaps the scene of evil Superman smashing into the oil-tanker could’ve been used, just to make him a little more menacing.
In any case a marvellous effort ADM I thoroughly enjoyed it.