I think the biggest thing our DL is doing right now is freeing up the LBs to make the plays they need to make. The role of DL is primary, then secondary-
Primarily, DL need to occupy. Occupy their gap and occupy as many OL as they can without giving up ground.
Secondarily, get off the block and make the tackle or pressure the QB. This is what makes a difference in a great DL and a good DL.
Good DL always have their primary role in check, great DL always make the plays (if possible) on top of the primary roles.
IMHO, our DL is good with some potential to be great. They are performing their primary roles (which is a very hard thing to do), and taking on the secondary role in some circumstances.