I did finish playing Fragile, and must say, while I really liked the general atmosphere and vibe of the first 2/3 or so of the game, it has a very lame ending, and in general gets worse and worse as the game gets near the end. Even though I liked the earlier parts of the game, it never really felt like it got going, there was always this "when will the real game start" feeling -- right up to the point where you realize "wait, this is the lame tacked-on ending!"
It seems pretty clear that they had some neat ideas, and managed to implement some of them at least partially, but simply ran out of time/money/inspiration/management-support at some point.
It would be great to see some of the creators make a more fully-realized game along the same lines.
BTW, the "soundtrack CD" included with the game (at extra cost!) only includes the "incidental" music, which was pretty annoying, as the title/ending tunes (sung by Aoi Teshima) are really nice. [OTOH, I downloaded them from somewhere without feeling guilty...]