Perhaps there is also a K5?
My reason for thinking this is that after reading looking at the physical structure from several pictures taken at different angles, I was struck at the consistant lack of mention of the little reflecting pool at the base of Kryptos. If I am not seeing things wrongly, and the pool does exist, this may mean we are dealing with the 5 classical elements found in Chinese literature: Water, Wood, Fire, Earth, and Metal (Water/Wood?=WW?)
For a quick overview of what the Wiki article on Classical Elements and a few more places might mention:
Water = number 1 / direction is North/ and has Blue and Black for colors
Wood = 3, 4 / East / Green
Fire = 9 / South / Red and Purple
Earth = 2, 5, 8 / Southwest / Brown and Beige
Metal = 6, 7 / West / Grey or Reflective
The Wiki Article of course is much longer, with important differences between other classicals such as the Japanese set where "Air" is listed as "Void"
What else struck me as important: The 5 elements can play out in their own complicated version of paper/scissors/rock, where one builds one, but is destroyed by another.
And another thing:
DYAHR, if not mentioned elsewhere, could it be short for "DaY And HouR"? In which case, someone with a small, $150 dollar desk version of Kryptos and a strong flashlight might want to play artificial "Masquerade" and see if they can get interesting spellings out of the letters when the beams distort the 'nuances'
Easter Eggs still in solved stuff?
Also, going over the K1 solve and keeping the lines breaks we have here, I used a simple process of emlimnation method on the answer given:
Treating each line seperately, every time a letter appeared twice in that line, I wrote it down once. So, if I did not make errors, line 1 came out to:
"EOFLIHTSENUI" which can anagram to "LINE FIT HOUSE". Line 2 is "BETENSADNE" which can anagram to "END BASE TEN".
I mention this because I have seen similar things in "Fandango"'s border work (among other games). Of course, since Kryptos 2 and 3 have already been solved, this may merely be confirmers for people out there, but I did not see it mentioned in what I read on the Kryptos Wiki.
Thanks for considering this . . .