I've got to say the only GUI features that feel like a needle in my eye are the "Mafia Returns beta", "DL" logos and the flashing mail icon with the hideous default Photoshop white and yellow glows respectively.

The white outer ridges of most borders seems to be beveled differently
in some places which is not the most appealing or flowing design either.

Lastly, I believe it would be useful if we could see each of the crews Tribute % on the crew page so as newcomers we can make informed decisions on which crew to join, as well as possibly a crew bank account and wealth displayed.

Remove the "Latest Threads" button under "Comm" as it is just superfluous. You can reach the "Latest Threads" simply by clicking Comm.

I would really like to be able to click tabs, and have a page brought up with that tab's options. It's a small thing, bit it bugs me when blank pages load.