Here's what I've done to my CS hawk:
Lots of work "lightening" the head with a file, grinder, and Dremel tool, undercutting the "beard" (if that's what you call it), and removing LOTS of metal from the sides around where the handle inserts.
Put JB Weld on the handle to keep the head from slipping off. Also, I wrapped parachute cord around the handle, about 4" or so from the head, with one end stuck between the head and handle to keep it from slipping off. This comes in handy when you choke up on the hatchet to cut kindling or whatever.
I also took a large drill bit and made a large detent in one side of the hawk head. I use this for the top of a bow and drill fire starter set-up.
You can get rust-blueing stuff on the internet, and all kinds of different finishes if you shop around (vinegar, etc...), or just leave it "in the white" and let it age naturally.
If you're willing to put in some work, and find out you can't get enough of the 'hawks, I recommend Cold Steel's. Alot of people don't like them because they don't cost $200+, but for fooling around with and sitting in the truck, they are perfect.