I think folks are taking the LCD 2's move off the "wall of fame" a bit out of context. Let's take a look at what Tyll actually states in the review.
"To my ears in listening over the years (I don't have many of the earlier LCD-2s at hand) the LCD-2 does seem to have moved away from their earlier warm glow, and are now markedly more neutral to my ears. The sound of the old LCD-2s certainly played toward my personal penchant dalliance with "creamy" sounding cans, but I do recognize it as a flaw in my aural personality, and genuinely prefer a more neutral and articulate headphone for serious listening. I think the current LCD-2 does a much better job in this area than previous versions."
"Gone are the days of uber-buttery sound for Audeze, I find the current models be pretty well balanced with the mid-treble range and up being stronger and in better proportion than previous Audeze incarnations. I hear the LCD-2 now as being a little grainier and less refined in the treble than the other two, but significantly improved over previous iterations."
"Competition in the $1000 planar-magnetic headphone category is hot and getting hotter. A number of small companies like Mr. Speakers have been ramping up in this welter-weight category and showing promising results. HiFiMAN with its HE-560 and Oppo with its upcoming PM-2 will be competing here at prices lower than the LCD-2. I continue to find the LCD-2 a strong contender sonically, but its size, weight, comfort, and styling are going to leave the door open for competitive assault."
"The LCD-2, now with better imaging due to the Fazor, remains a solid gateway to reference level listening. Paired with a nice low output impedance solid-state amp these cans deliver great dynamics, and the solid across the board performance needed for a superior listening experience. There's lots of competition appearing in this area the bares watching, but I continue to think the LCD-2 should be on your audition list for $1000 headphones. A hearty recommended from me."
In reference to the entire LCD lineup: "I think the Audeze headphones need a couple dB more umph below 120Hz, and the area between 2kHz and 5kHz to fill in some. But that's it...and and there aren't many $1000+ headphone that are closer."
My conclusion is this: The LCD-2 was removed from the "wall of fame", not because it is an inherently worse headphone than it previously was (though it is clearly a different headphone on some level than when it was initially released), but rather because the world/context in which it exists is now different. There are simply many more contenders at this price point, many of which are very compelling products. Furthermore, the LCD-X is simply a better headphone in a number of ways. Is there room for the entire LCD line up on the "wall of fame"? Unlikely. I simply see that headphones are getting better and the LCD-2 got bumped off by the X. Life moves on, and I'm excited that Audeze continues to refine their products. Who knows what they have on the horizon.