Wow, a real reunion? I really hope so! Although, like others have said, it wouldn't be the same at all without hide, he was such an exceptional member and guitarist on his own. The world really misses him.
But, if they got back together, it would be an amazing moment, because it means that they can move on, and remember him happily rather than mourn him, however awful his death was.
I love X Japan's music, mostly their ballads, their lyrics are so meaningful, their songs so well sung and their music so well composed
I like their rock too, Kurenai is my favourite.