Bravery, you just made my day, amazing analysis, and makes what im about to say actual have some meaning!
Hey everyone, this is my first post and Ill do so with my short analysis of the Secret Ending. First about the 3 Armored Unknowns. The large, center unknown has an enormous keyblade that we have never seen before. The female unknown (Purple Armor, has and obvious feminine chest) has what looks like Oblivion. The third unknown is actually not wielding the keyblade Riku gave to Kairi (hers was much more colorful), but a different key blade in which s/he holds in a unique way similiar to Wisdom Form.
Also note that NONE of keyblades (with the exception or Riku's, Sora's and Mickey's) have keychains, even the ones in the field.
Next lets take a look at something my friend brought to my attention.
that symbol is the symbol of those that are whole. It says im my LE staregy giude.
Examine the Trinity behind the Nobodies: Heartless Emblem, Nobody Emblem and an Unknown Emblem we have never seen.
A closer look
Me and my friend continued discussion; What would happen if the Nobody Form and Heartless Form of someone happened to meet? Based on how the Trinity is built, the result of a Nobody and a Heartless would technically be the whole form once more yet this time with unprecedented powers.
After the 3 Armored Unknowns lift the keyblades from the ground the camera zooms out, showing them in the center of a cross, very similiar to the previous ones I had posted.
My final analysis comes from the start of the secret ending, where we see the Armored Unknown atop a huge beast. Remember the aerial battle with Xemnas upon the hover bike against the flying beast? From a very close look at what the main unknown is standing on the resemblence seems very clear. (Also adding fire power to Bravery's theory that the land unknowns are in is Kingdom Hearts)
Please tell me what you think of my analysis! Ill be around and Ill post anything else that might catch my attention!