I normally read the site from work (ssshh, don't tell anyone) which means that I access it from a rather locked-down version of Internet Explorer. I don't know if it's just me, but the Legal tab is on a second line, distinct from the other tabs, which seems a bit odd.
I like that you've got facebook, twitter and RSS buttons up on the top right, but would it be possible to have seperate RSS feed buttons within the News and Announcement and Battleblog areas of the front page, specifically for those two streams? It looks as if the RSS feed at the moment is for site changes, whereas what I'd like to be able to do is set up a feed just for the News and Announcements stream.
At the moment, only the News and Books & Games menus are drop down menus overlaid on the page. The white frame around each item and the colour of the backdrop on each entry make it a bit difficult to make out the extent of the menu - would it be possible to have a darker colour for the frame? A white frame over a light gray background is a little tricky for my eyes to pick out.
Will there be a version of the website aimed at mobile devices? One of my favourite things about the forum is that I can read it from my Blackberry comfortably, and without devouring my monthly bandwidth allowance.
With the logo reading "BattleTech: The Board Game", it might be worth adding links in the links area to the BattleTech family on BoardGameGeek and the MechWarrior family on RPGGeek. There isn't a particularly large BattleTech presence there at the moment - I added sixty or so entries for BattleTech products to BoardGameGeek myself earlier this year - but it might generate a bit of free traffic back and forth, and more exposure is generally a good thing. A number of boardgames companies have blogs or issue news releases on BoardGameGeek as well - it might be worth seeing if you can pipe your news stream for new product releases into their site as well.