To solve our defensive problems !!
 

Switch to a 3-4. Being that our new strong suit is our LB's and our weak spot is our DT's, minimize the weakspot and focus on our strengths. Especially if we get Donnie Edwards. Will Smith, Hollis Thomas, and Charles Grant on the line. Edwards, Simmons, Polley, and Fujita. Guys, Thats a pretty good front 7.

34 has been beat to death here. I think we may see a bit of it this year in certain situations. The problem is while we have up graded the LB only Scott is signed long term. Remember Scott was not signed by Dallas because of the 34. They drafted Carpenter for that position. Who we keep next year will be a good indication.
As for the NT/DT deal lets see what Hazs doghouse produces. Bentley abd Hilton both said Haz played his favorites pets. Looking forward to this part with great interest.
As for the DE they will have to give up sacks for tackles. I think both can do it.
The draft addressed other areas of need on the offensive side. The D is mixed with FA and UFA.
So wait till next year to get a feel for what we will do. Anyways it will be 2 years till the pieces start falling into place to even talk about it really as a base Defense.