The new regime wanted to build this defense out from the back end. Kubiak had a press conference in which he explained why as an OC the secondary is so important in designing and calling plays. But the last two Superbowls were won by teams with dominant D-lines- so that was certainly a choice by him that is against the grain. I would have taken McDonald over Stukes, but if Stukes becomes a chess piece back there, and these young corners develop, than you might have something. But having a good secondary won't make a lick of difference if a team runs down your throat every play.