I think it really depends on what happens with Spencer.
I think Ratliff is suited best for the 1-tech, where he doesn't have to face double-teams and is allowed to use his quickness to shoot the B gap.
However, if Dallas re-signs Spencer, I think Ratliff will end up playing 3-technique because he's one of our few linemen who can play both spots. The NT spot in this defense would not be much different for him than the NT spot in Wade Phillips' D.
The reason it hinges on re-signing Spencer is that likely will determine where Hatcher plays. I don't think Hatcher is suited for the 3-technique, but he's a good fit for the 1-technique. However, if Spencer isn't re-signed, I think Hatcher will be moved to RDE.
So the way I see it is:
Spencer re-signed — Ware, Hatcher, Ratliff, Spencer.
Spencer not re-signed — Ware, Ratliff, FA, Hatcher.
Another option if Spencer is not re-signed might be Sean Lissemore at the 3-technique. Not sure how I feel about him starting, though, although I think he's a good player.
The other primary option we have is Tyrone Crawford, and I certainly hope Dallas doesn't hand him a starting spot. He needs to have to beat someone out for one.