For the record, elite teams (including Bama) do actually sign 3 star DL
Number of Three Star DL recruits (using 247 composite)
For Bama:
2015 - 2 (Christian Bell and Anfernee Jennings)
2014 - 2 (OJ Smith and Johnny Dwight)
2013 - 0
2012 - 2 (Darren Lake and Dakota Ball)
For Florida State
2015 - 0 (note only one DL recruit)
2014 - 4 (Leonard, Torres, Williams, Jones)
2013 - 2 (Hollin, Bryant) - Note that Bryant was a 2 star
2012 - 1 (Stuckey)
For LSU
2015 - 1 (Washington - only DL recruit so far)
2014 - 2 (Teuhema, Lealaimatafao)
2013 - 2 (Patterson, Neal)
2012 - 0
For Ohio State
2015 - 0
2014 - 2 (Slade, Thompson)
2013 - 1 (Sprinkle)
2012 - 0
USC
2015 - 1 (Jefferson)
2014 - 2 (Dorton, Hill)
2013 - 0 (Only one DL signed)
2012 - 1 (Breslin)