Big kudos on a lovely new design! I can’t even begin to express how much I love to see that you’ve integrated your website with the forum more. A very wise decision, I must say.
First thoughts:
Are you using a CMS, in which case, what? Just curious 
Why oh why is the “download” nav-bar to the far left?.. If you ask me, ‘home’ should always be on the far left on any website, as I always automatically click there when I when I want to start over, and I’d guess it might just be the most clicked nav-bar on the majority of websites out there. The download link won’t be clicked more or seen more easily just because you put it there. You’re already drawing a lot of attention to ‘download’ with your “gest started using jME”, which replaces the typical big “DOWNLOAD!”-kind of “sticker” that many sites use.
As for other comments on the front-page, I think the other members have covered the most of it already and it seems most of the necessary edits were done even before I saw the re-design for the first time.
Gallery
A cool-looking flash-gallery like this looks very appealing at first (even for the slower computers once they get past the slow start…), but in my opinion it quickly looses it’s purpose as a gallery-software.
Seeing galleries like these, with no “date submitted” or any other details, I can’t help but feel like this gallery has and never will be updated (of course it will be, but I still don’t think this would be a frequent event). This is also largely due to the feature missed by Gentleman Hal, a “submit your own picture” link. You could have two categories, one being the “Sser-Submitted Pictures” (for this you might even have a “latest pictures added” on your front page) the other being “Showcase Screenshots” or something to that effect.
I read about ‘Postcardviewer’ that by righ-clicking I was supposed to be able to open an image in a new window, e.g. if I want to link someone to this perticular picture. I can’t however seem to figure out how to actually do this. This is an option that would be perticularly important in the case of a “User-Submitted Pictures” category.
mojomonk wrote:
we'll add some sort of link (more than likely an e-mail link) for users to send in screenshots
Okay, that might work, but it sounds like you're leaving most of the work up to whoever received that e-mail, instead of letting the user and a gallery-software handle it all without you needing to care more about it, besides adding the pictures you
really like over to the showcase-category.
Seeing as I don't really know how you're managing your gallery and how well it is working out for you, I don't have high expectations for any changes on this area, but I'd still like to make some quick recommendations:
ZenPhoto was for me a real eye-opener in gallery-software. I thought Coppermine or Gallery2 was the only way to go if you wanted a somewhat feature-filled gallery (easy mass-uploads for instance), but ZenPhoto just proved how utterly mistaken I've been. I could tell you more about my experience with it so far and they way we've chosen to manage it upon request.
Lightwindow 2.0 - As it says on the website, it's just yet another "light-whatever", but it works. It just
works. There are many other similar options out there however. In any case, I always choose JS over Flash.
Forum
I'm surprised you haven't just installed a temporary theme already. There's a plethora of themes on the SMF site, many of which already match your main site to an acceptable degree. Of course, a unique theme for the forum made to perfectly match the front page would be the ideal solution, but considering the user-suggestions still left to take into account, and the other necessary adjustments you're already aware of (wiki-design probably being the most important one) I imagine creating a unique jME-theme for the forum could end up a long way down on the list.
You could always ask the users to find their favorites on the SMF database, then you just install the most popular one(s).
Also, maybe before starting the new forum-design, you should consider moving from SMF 1.1.x to 2.0, seeing as the theme would need some minor alterations after you do that. If you're planning on doing this, I'd suggest waiting for Beta4 at least though.
Global Menu
In the end, I would also like, no I would
love to see a global menu for your entire website. Meaning, regardless of whether I'm browsing through the front-page, the forum or the wiki, the top-navigation and banner will still be there to offer quick navigation throughout the entire domain.
Now, this is slightly off-topic, but I actually think there's something to this "sad monkey". It
does look sad; shouldn't it rather look really clever and pleased with itself; happy?