The console wasn't damaged. But it definitely looks more used than the one I sent in. And I don't think it says anything about what is to come. Nintendo isn't the only console manufacturer to send out used consoles as repair replacements. MS does it. And every console has its share of hardware problems especially out of the gate.
If I were you, I would be on the phone asking for a supervisor to send me a new console. They shouldnt send you something in worse shape than what you had already.