The Show cheers should have changed their openings

Look at how knots landing did theirs with their season 11 to 13 seasons.

http://www.youtube.com/watch?v=Okd-PLDFpEY
http://www.youtube.com/watch?v=irOhkwz8gZ0&feature=related
http://www.youtube.com/watch?v=34FYhhHgf1o&feature=related

That would be interesting if cheers would have changed their openings and kept the theme songs except in Soft acostic mode.