if they've had no success shopping any of the vets they wanted to trade for pick/s, then trading down to get another pick is not a bad idea unless somebody they love is sitting there.
Why trade down? Hell, if there's no one there that we want in the 4th, why would we expect anyone to be there in later rounds? Take the best OL or DB available with our pick.
I know 7 spots isnt far, but its not like a 6th rounder has a shot to make our team... Don't c why we trade down there, unless its too early to draft the guy we wnat