You can draft well and still miss the point. The Chargers did plenty of tidy work and somehow never got around to interior defensive lineman, which was the need that mattered most. A sturdy weekend that grades out a B.
On the needs board they went 1 of 8, with edge rusher the one that mattered most. The trenches got the money picks, top to bottom.
In short, they left a little better than they arrived, which is the whole idea.