If you like this kind of stuff, you should read Peter F Hamilton's books : The Pandora Star saga and the Void trilogy. It's literally full of implants, biononics, offensive programs, virtual shadows, personal forcefields, combat augments and so on. Pretty impressive stuff. (not to mention postphysical humans)
I suppose it is much more evolved than in Freelancer's world. Still, implants like Fran said would make sense and I guess there is no problem with you RPing your characters having some cool features implanted in his body. (I personally RP the Neural-Net as being accessible by a brain chip, works pretty well).
By the way, I think Rogue NPCs in the bars have a sort of robotic eye.
