3
increase fixed width? I believe there is no fixed width, but a dynamic 75%.
I have done a little to the logo size (and really could use a better more neutral logo - perhaps just remove the blue background and make it transparent, but me and Photoshop are not good friends)
I will submit a patch to TabMod soon, making it easier to use it as it clutters up a theme quite a lot right now and requires a TabMod-compliant theme to show up.