When I first read the title, I thought it was meant ironically. For ranged attacks, killcams can be a pain in the ass. If you don't stand at the same height as your opponent, your "final" shot will miss thanks to the killcam when it otherwise would have hit. If anyone knows a solution for this, without disabling the kill cams altogether, I would appreciate it.
The finishing moves were not present in the release version of Skyrim, but came with one of the later patches, so it's Bethesda's fault, not SureAI's.