Most of that stuff looks extremely fake to me. Rinoa's head is huge and Squall has no neck. Besides, I remember Square themselves saying that a sequel to FFVIII would be highly unlikely, because there was closure to the first one.
I think that seems like a good idea. I was always interested in Laguna's full story, but then unlike Vincent, alot of things were answered about Laguna. I still don't think that's a bad idea though. It might actually work.