Giddens has to continue to work on his handle, refine his off-the-dribble jumper, and FTs...mainly, he needs to get up to pro level speed and decision making, but he's got a complete game that needs minor polish...
Walker has been a TO machine thus far, which is in line with his questionable decision-making from college...he tends to over-commit to a move and forces things that aren't there...but he's smart and works hard, so I believe he'll improve his decision making rapidly as he works to develop and refine his game.