Sorry but totally disagree. We take Def Tackles who usually made their money in college attacking through a one gap. We then "convert" them to "occupy blockers" to keep the LBs clean. We also take DEs who have good pass rushing credentials and "convert" them to OLB and add pass coverage responsibilities.
LeBeau's defense does not take them from college and put them in familiar positions.
...and thr reason WRs look good is because they aren't asked to be anything but a WR. We draft OL and ask them to learn all of the positions on the OL and play musical chairs and wonder why our OL stinks.