The blue in the upper right-hand corner reminds me of the sun you see in Sean/Crys' ending. Only, it has a dent in it.
I think it's safe to say that I've never pondered any significant meanings or messages conveyed through this image. I always thought that the rocky, cracked surface at the bottom of the screen was perhaps a crater from a moon, the large dome was simply just that -- a dome. The smaller light 'dome' you see on the left side of the top I presumed to be light.
One could also perceive the image to be something akin to this: the "dome" is a planet, a single world (as, it is known that eventually the people of Landen at least forgotten the other worlds...), and the globe of light is a rising sun, perhaps moon. The cracked ground represents the struggle from the Devastation war, the split in the rock being similar to how Alisa III's people became divided.
The blue thing in the upper right-hand corner kind of reminds me of an explosion, but I am debating on this for my own amusement... But, upon flipping the image 180 degrees in trusty ol' paint... It reminds me of a blue Megido, the shadow at the center being one of the 3rd gen main characters. Or maybe, if you get a -good- look at it normal, it's a concave image with the blue fiery explosion seeping out from it!! Maybe it's a mixture of the sunfire and the blackhole, the Alisa III's fate depending on the paths taken throughout the game. ;p
Okay, I've had my silly moment of wonderment.
