They have 20 years of proven experience, combined. Chris Clemons started had over 33 sacks in the 3 years prior to last season.
I haven't looked, but I would guess our entire defensive line doesn't have 75 sacks combined. Our most proven passrusher is Anthony Spencer, who looks like his career might be over. You want to talk about question marks? Look at our defensive line.
Mincey - Career journeyman. Didn't even start last year.
Hayden/McClain - Both career journeyman. McClain hasn't started a game since late 2011 and Hayden has 29 starts in 5 seasons in the NFL.
Melton - Looked bad in 2013 before blowing out his knee. His best season produced 7 sacks.
Selvie - Came off the couch and played well last year, but again, a proven journeyman. Never started a game before coming here and never had more than 2 sacks in a season. An injured DeMarcus Ware nearly matched his production, while playing 3 less games.
Then we have the guys like Crawford (never done a thing in the NFL), Lawrence (never done a thing in the NFL, and injured), Spencer (could barely walk as of 6 months ago), and a glut of undrafted rookies and camp bodies.
You want to talk about question marks? You are rich.