Well, there is always the argument that when the VC version of a game comes out it lowers the value of an old game. Valkery Profile went down in price when the one for the PSP came out, mind you it has gone back up and it only diped slightly but it did. I doubt that is why they are bringing the games out, but my two games would be worth a little less for about six months.
The more that I think about it the more that I believe that they just don't want to translate two games with an insane amount of text in them. Suikoden 1 was talky, Suikoden 2 had text and enemies that you could find that they never translated the name for, ever. I doubt that they want to pay someone probably six months worth of time to just sit down and translate everything in the game, than hand it off to someone else to localize it. It isn't a cheap process.