Will the Ravens have a top five defense next year without Rex Ryan?

I think that they still should, because they'll most likely still have the core of RayLew and E Reed, as well as Rex Ryan's old D. They may not have "the Mad Scientist," but they'll still be able to achieve his "organized chaos", because they've been doing it for years. Also, even if they didn't use their usual confusing techniques, they certainly have the right personnel to be a good, straightforward D. They have some of the best players for each position, and these players are some of the most versatile because they were forced to move around with Ryan's D, but they still will do well ordinarily.