While I can't completely argue against the whole "CLAMP likes torturing happy, innocent characters" thing, it's not a like they write blatant piss-on-their-character-fests.
I mean, sure bad shit happens to some of their characters, but it's usually side characters and secondary characters who suffer worst, or at least permanently. Reall, looking at it, only the people residing around the "Tokyo Babylon" and "X/1999" sections of the CLAMP-Verse get completely fucked over for life. And their male characters usually suffer far more in ratio then their female protagonists.
Almost all other CLAMP works have GooD EndS, and characters that get fucked over usually end up happy enough. At least in their respective work (example, Saito Kaede from Angelic Layer inexplicably getting killed off in the years in between that and Chobits).
Really, though, if those other anons are anything like me, they just want to see the Knights again. Rayearth is a oldschool favorite for a lot of older anons after all.