I would argue that they didnt actually make a great job of Feedback, and ended up removing most of the charm, originality and individuality of the originals and botched them up royally.
So saying, I would have taken some more covers over the last 3 albums any day of the week.
In the spirit of the thread though, what would I have liked to hear them cover?
Crusader by Saxon ( iassume they arent massive saxon fans, but I like the song)
Cars by Tubeway Army/Gary Viagra
Symptom of the Universe-Sabbath. Always thought Alex was crying out to play something chunky and riffy