I'd love to get a monster to play beside Casey. We've never had one and Casey has had to be the guy by himself. That said, everywhere I've read says this draft is deep at DL. We also have 1 glaring hole left on the IOL IMO, and that must be fixed. If the offense can finally get it together, that helps the defense too.
I hate the idea of IOL at #19, but we would be back to a top 10 OL or better. That makes every player on offense better. Then you can take defense the rest of the draft if you'd like, I'm cool with it. But the OL MUST be fixed, and it's not there yet.