Exactly. Just because the players heading out moved quickly and happened prior to their replacements coming in, its no reason to panic.
We always knew DeMarco would be gone if another offer was crazy, and this one was. Its not hard to find a replacement either in the draft, or FA, or both.
It was obvious one of Free or Parnell would leave and one of them left.
Carter was going to get more than Dallas wanted to pay, and he did.
Durant would have been nice as a backup, but it was very unlikely he would have started next year.
Harris is a good player but we didn't have enough touches to use him at WR. His ST ability can be replaced with a late round draft pick.
None of these moves are unexpected - or bad moves in the grand scheme of things.