Hybrid or a traditional 4-3?

So with the addition of Robinson and the departure, for now at least, of Vaccaro what do you guys think our D will look like this year? More hybrid nickel stuff or more of a straight up 4-3 defense? How do you see this measuring up to last years defense? Will playing a more tradition 4-3 add more pass rush? Will we suffer on the back end at all because of this?