From an aesthetics standpoint:
The blue, red, black, flowery, etc designs, and even the paradox cube are good. But I feel we are going a step too far. They must look good even at small sizes of say 12x12 in a small corner, and any detailed flowery stuff will not be seen. I think Snago's one is the best here, as it is a simple monochrome logo:
It will be small in file size (as it is monochrome), and it will look good even scaled at small sizes, because of the 2-color contrast. It doesn't have to be strictly black-n-white, it can be darkblue-and-white and it'll still be fine.
One thing to keep in mind is that if one of the intended uses of the new logo is for in-game icons, you should demonstrate what it looks like at 16x16 pixels. (Sometimes they end up even smaller than that.)
There's nothing wrong with using one version for in-game icons and another version (based on the same idea) for a web site logo. As one example, browse on over to the Google or Microsoft or Yahoo web site and look at the logo that appears in the tab of your web browser. Obviously, you can't fit the entire logo into that space, so they chose a key part of it that represents (and still identifies) the whole thing.
Many of you have picked up on this and chose to use the key elements "A" and "3" for the icons, which is a good idea. Now think of how that might translate to the logo in the top-left corner of all the wowace.com web pages. There's more room here, enough to fully identify Ace3 and World of Warcraft.
(Ignore the cube, I just stuck it there because I can't quite decide how to elegantly stick a spade into this design yet. :P)
I like this one a lot... wonder if it'd look worse with an "A" in it.
While the "cube" is neat, and certainly applicable with the 3... that's way too damn big. I really like the font on that though. Maybe we could expand on that, keep "Ace" spelled out, and throw the spade behind the 3 instead of the A. Maybe use Snago's spade-3 and your "Ace" font...
The font I used is Warnock Pro (opticals set, caption intent, normal weight, italic).
If I saw this on any other site, there is no way I would take that to mean Ace3. It looks like A-cubed or the A-3 highway on a blue leaf. In fact, on this site, I thought it was the logo for WAU 3.0. (If it's supposed to represent the card suit spades, I'd suggest you make it black, not blue. There are no blue spades. It could just as well be a blue leaf! Black is the new blue, trust me. :P)
Why exactly does Ace3 need a logo? What will you be branding with it? Mousepads? Coffee mugs? :)