Dissidia will be an interesting 'side' game in the FF series. Mostly for the fans. I've never been a big "fighter-game" fan, but because it's FF I'm willing to give it a try.
I think it is likely that Before Crisis will eventually be released on an alternate platform, but it might not be for a very long time. I think the odds are more likely that fans will find a way to bring an
emulated copy onto the net for download, I've been looking into this on and off for the past year or two, and I think a few sites are getting close to doing this. But we will just have to wait and see.
And as for the 'official' fiction which has been released based on the FFVII storyline. I liked the stories that came with the boxed set. They were simple short stories which I think probably mean very little to anyone not familiar with the nature of the overall storyline, but I thought they were cute. I especially liked the one with Denzel since his story had an endearing connection with one of the games most unlikely and mysterious heroes. (Miss Lockheart you know who I'm talking about

) And the good thing about this stuff is that it is official, so it gives us uber fans more stuff to obsess about, LOL, did I say that?