In 2013, the DL had Bennett, Avril, Clemons, Red Bryant, Mayowa, Tony McDaniel and Brandon Mebane. The LBs were Wagner, Irvin, Wright, and Malcolm Smith. So at one point, Pete and John knew how to build a D-line. Unfortunately, it's been downhill from there with a fair amount of bad luck--a lot of wasted draft picks (Collier, Malik McDowell, Jordan Hill) as well as trades that didn't work out (Clowney and Sheldon Richardson) and not great FA signings (Kerry Hyder, Ziggy Ansah, Nkemdiche, etc.). We lost resources when Schneider was unable to re-sign Richardson, Clowney, and Jarran Reed and didn't try to re-work Wagner's contract.
Now it feels like 2010 all over again, starting from scratch, with only a few real assets in the front seven (Nwosu, Taylor and Mafe). It's going to take a great draft, plus at least one solid FA signing (I would say Javon Hargrave, Lavonte David or Daron Payne, although Zach Allen or Dre'mont Jones might come cheaper) and perhaps a trade or two to really beef up the front seven. Not one player that we have up front could start for the 49ers.
Until we change the personnel, I'm not sure we can judge the scheme or Clint Hurtt.