Why would you remix your legacy?

In preparation for a special interview with Steve Gillmor about music, I listen. To some stuff he likes, and also what I like, Dream Theater being one of the latter bands.
The Long Island band recently released a Greatest Hits album which included remixes of some songs, notably Pull Me Under, Take the Time and Another Day, all from the 1992 hit album Metropolis Pt. 1. (On a side-note, Pull Me Under is also one of their most successful songs.) Before I throw my verdict on these remixes at you, some background.
I began listening to Dream Theater in 1994, you know bought the then current album of the day, Awake, went to a concert. Back then Amazon was not around and I lived in a relatively small city, not really catering to the needs of a prog rock fan, so we went 100km by car to buy Images & Words and even had a small listening session, three friends and I. The type were you sit around the speakers and when the song is finished you go “wow”, and “can I hear the last bars again, that’s sick”. (if you are/were musician you might understand)
Fast forward. Images & Words has been around my head since that year, almost 15 years. I’d consider it not only among my favorite Dream Theater albums, but also among my overall favs. Now the band releases remixes. I am not going to say they were bound to suck, but the songs mentioned were created and executed in the late 80s. Why would you go try to Linkin’ Park-ize the sound of the guitar? Does the snare drum need to sound like on Metallica’s Some Kind of Monster?
I don’t know, the remixes were the only reason I would buy that album, owning all the other songs already. After my short listen in, I think I’ll pass. I’ll rather spend my bucks on the Live DVD.