Some change for the better--and some not. (Insider).

With the season upon us, we are about to find out if the various system changes instituted by coaching staffs around the league will work. Some look promising; others just don't appear to be the right fit.

Baltimore's 3-4 defense

Granted, Baltimore has a lack of talent and depth on its defensive line. But the transition to a 3-4 reeks of a quick fix.

In the 3-4, it's essential to have a nose tackle with great size who can occupy the center and guard. At 285 pounds and with almost no starting experience, Kelly Gregg is not the right guy.

End Michael McCrary, who had as many as 14 1/2 sacks in 1998 as an edge rusher in the old scheme, ...