Okay, yes, I am revisiting this old issue. I am fully aware that AceNet Central is, regretfully dead. Still, I am wondering if anybody has files or links to the various ship concepts that were on that site. Does anyone know where those can be dug up, or does anyone know the administrators? It would be cool to at least bring back those ships.
Your best bet is searching through archive.org. The Ace's Club had a lot of different websites with a lot of different URLs; googling for Wing Commander Aces or AceNet Central will get you some broken URLs to try (sadly, Phoenix's beautiful later image-laden versions are probably the hardest to recover, since the archive stopped collecting graphics after a point.)
(You will probably find, though, that it *isn't* especially cool to 'bring back' those ships beyond the initial nostalgia kick. At best the idea was that they were for Ace's Club writers to incorporate into their fanfic... at worst they were extremely goofy.)
Why did AceNet close anyway? What problem did they have?
There are lots of reasons, the simplest being that the people responsible for the site moved on -- grew up, got jobs, got married, etc. I can't imagine leaving the fandom, but it has happened to good people over the years. Not a day goes by when I wish we were as active as we were in the WCA days... but it happens.
In a more broad history, the Ace's Club itself was (is?) a group whose ecological niche disappeared. In the mid-1990s the internet wasn't at all about interfacing with other people... groups like the Aces cobbled together over months of hard work with mailing lists and web sites and IRC what something like a Facebook group does in three seconds today. You joined the Aces because they were the only game in town and they worked hard, as silly as some of their rules and concepts were (and they were awfully silly in many places).
(There's also a very strong movement, I think, against 'fanfic' today, which was the focus of the club. It's not that it isn't popular anymore, but it's considered... low class, I suppose. Everyone reads it and many people enjoy it, but it's something we're embarassed about instead of something we put on a pedestal.)