I realize that fans outside of Dallas don't realize how good Hatcher is as a pass rusher, heck most fans of Dallas don't realize how good he is but if you asked the teams that went DT in the first round if they'd be happy if their pick turned out as good as Hatcher, they'd say yes.
Of course if Ware is injured this DL becomes a weakness but take probably the best pass rusher in the NFL off of any DL and it significantly weakens it.
I would have liked a quality DL to fall into Dallas' lap but there was no DL value where Dallas was picking. People keep pointing to Floyd but in 3 years people won't admit they were in favor of him. He has every indicator of becoming another 1st round DT bust.
As far as Ratliff, I still have hope and I think you are underestimating how much the change in DL philosophy is going to have on him.
The DL is stronger than the LBs right now as we don't know who'll be the 3rd or if Lee and Carter can stay healthy. Plus none of the LBs are effective blitzers. It's also much, much stronger than the secondary due to the question marks at S.