Yeah, it's probably time the Packers let Raji go. Mike Daniels, Datone Jones, et al. need to get more playing time. Also, it's usually not incredibly difficult to find a big run-stuffer defensive linemen in the 3-5th rounds of the draft. There were a couple available in that range this past season.
I was a big fan of Raji, but he has really disappointed me. Doesn't seem to have that true passion anymore. He can make plays that only an elite talent could make, but his overall average play brings down his average to just an average player. It's really too bad. If he does leave, however, the Packers will need to find some kind of replacement. At least he's been relatively available.