I was planning on doing an edit on KOTCS myself, especially regarding the finale. It always bothered me to see a CGI-alien, so I'll try to get rid of it. Furthermore I felt that Spalko's death-scene wasn't gory enough, so I'm planning on changing or replacing that as well.
As for the UFO... I'm not sure yet. I think it was a little too much, so I'll try to either remove the UFO (and only show the flying debris), or at least cover it up a bit more.