Anyone that thinks we replace DWill or JStew with players taken after the 3rd round (especially 6th rounds picks), make me laugh.
While it's not completely out of the possibility, it's rare in this league.
As for who should go, JStew needs to go first. While health issues are a major factor, in the last 3-4 years, he seems to be way too tentative once he gets the ball and waits too long committing to run North & South.
As for DWil, it seem like 25% of the time he has someone on him as soon as he gets the ball, but fight to make it back to the line or minimize the loss of yardage. IMHO, he also seems more likely to keep restructuring /take the pay cut to finish out his career as a Panther, than some.