I guess that any hope of Square doing a VC release of SD3 is empty, because they'll never do it no matter how many people wish for it. It's a game that anyone can obtain from the internet and in any language so they have no reason to bother with it because they wouldn't make a profit from it.
Well, of course, but that is the same for ALL games on the virtual console. Besides most people pay for those I think, because they want to be able to play them in their living room, and not on their computer. What Square Enix would achieve with the release on the VC is getting gamers that never knew it even exists to play it, and aside from that I think many people who already played it a lot over the years would buy it to "own it".