Why not keep them and try to get some production out of them. Most 7th rounders are out of the league in about 3 years. At least these guys prove they have some talent.
Well, I'm in the rebuilding mode of thinking. Rack up some draft picks. Heck, if they bring in 1-2 late round picks each, package up those late round picks and use 'em to trade up in draft.
Why not trade those handfuls of late round picks for a higher round? Find some gems in the 5th round.
Besides, our ST sucks and I'm sure the next regime could find some better ST players w/ those picks.
Unload the mediocrity, pick up and home grow some fresh talent.