Compensatory picks are important and the Packers have done reasonably well with them. I don't know how other teams have fared, but I would guess we are near the top of the list in terms of success:
2006: T Tony Moll (fifth round, 165th overall), DE Dave Tollefson (seventh, 253)
2007: TE Clark Harris (seventh, 243)
2008: G Josh Sitton (fourth, 135)
2009: None
2010: OL Marshall Newhouse (fifth, 169)
2011: CB Davon House (fourth, 131)
2012: DT Mike Daniels (fourth, 132), S Jerron McMillian (fourth, 133), OL Andrew Datko (seventh, 241), QB B.J. Coleman (seventh, 243)
2013: DL Josh Boyd (fifth, 167)
2014: TE Richard Rodgers (third, 98), WR Jared Abbrederis (fifth, 176)
That's five solid players (Sitton, House, Daniels, Boyd, & Rodgers) or six if you make an assumption that Abbrederis will pan out. That's 5 comp picks out of 13 or 38% in mostly low rounds. Pretty good.
Other comp picks pre-Thompson include: Scott Wells, David Martin, Josh Bidwell, Matt Hasselbeck, Tyrone Williams, Marco Rivera, and Keith McKenzie.