You know what would be awesome? If bands went back into the studio and rerecorded their classics. I was watching some youtube last night when I came to this revelation. I was watching Tool preform Stinkfist and STP preform Plush--both are staples of any concert they headline. Over time, they have perfected these tracks (Tool is even know to change lyrics in their songs from time to time) with their repetitive play on the road. They make different decisions will vocals and sound, further enhancing--at least in their minds--the essence of the song.
So why not go back into the studio and rerecord these classics with their new essence intact--introduce new sound, new bridges, new lyrics, new perspectives on the zeitgeist in the realm of familiarity.