While I'm not suggesting that Gibson is the answer, the notion that sending a pick for a goalie, even short term, isn't that big of a deal to me, unless it's a 1st round pick.
Canes have drafted 40 players in the last 4 drafts and there was no chance, that even if these prospects pan out at historical NHL rates, that the Canes could keep them all. Assuming some/most of guys like Nadeau, FUS, Artamonov, Morrow, Nikishin, and maybe even Legault pan out over the next 2-3 years, it's going to be hard to crack this line-up.
Plus, we know the Canes are going to turn their 1st round pick next year into 2 seconds and a 4th. Or if they have any cap space left, will use it for a retention slot for another 4th or 5th. It's what they do.