I have not heard of anyone working on a RAPTOR X LINEBRED SNOW, but it's very possible that some are trying that cross.
It is definately possible to make a tremper albino linebred snow with eclipse eyes. As for the patterning and line bred color traits of the raptor passing on, I can't advise because I am unfamiliar with the linebred snows.
Lets work on just getting Line Bred Snows more popular I personally do not work with them just because the possibilities seem very limited, now Gems and TUGs, thats a different story