I notice that they still keep popping up now and then even with FA cooling off and everyone going into draft mode for the next month.
One thing that the fans don't realize right now is that the team still has offers out on some of their existing FA. As of right now, they are still trying to resign Philip Daniels, Khary Campbell, Marcus Washington and Pete Kendall. The fact that they haven't been talking to anyone else tells me that these guys are more important to the teams to sign than any FA available right now, or else they would have given up on some of these guys and moved on to other players. Considering how little cap room the team has, they probably can't afford to sign these guys and any additional draft picks.
Also, with the draft coming up, a lot of the perceived needs of this team could be addressed at that point. So, a player signed now might end up being a useless attatchment later when the picks come in and the need there is addressed, but other needs have come in in the meantime from what wasn't covered in the draft.
So, while it is cool to pick over the leftovers and see who would be decent on this team, the team themselves probably won't do anything until well after the draft when they can better assess what they still need on this team. To be honest, most teams are probably doing the same.