Some people can't be pleased. Some tuned in expecting current Peyton Manning to be on display. The thing with Luck is he has a tremendous upside and thats what drafting someone is all about. If he doesn't develop anymore than what he is now then he'll be a bust. If he builds on what hes already got going for him then you have something special. Thats the risk you take with a draft. Based on what he can already do and where you project his potential will take him he is worth the #1 pick. Whether that works out or not is the risk you take.
This year will really be a year you get a good answer to that question with quite a few spots on the Canes roster up for grabs. Normally the only person that is a healthy scratch and not be in the AHL is an enforcer. Sometimes teams will carry 7 defensemen just to alternate one out every few nights but it would be rare to see a team scratch the same guy over and over without sending him down.
This year given all the young guys trying to make the team you may see them carry 2-3 extra guys and alternate playing them every few nights. To answer your question though there isn't usually someone that is just inactive and doesn't play unless he is injured. There is usually no more than 1-2 healthy scratches and who that is changes game to game. If there is one guy they've singled out to be scratched night after night he will either be sent down to the AHL or waived. If a guy has a 1 way contract he has to clear waivers before he can play for the AHL team, that gives any other NHL team a chance to pick them up. Usually that doesn't happen though because if you are risking waiving a player to send them to the minors then you can afford to lose them. 2 way contract guys come and go between the pros and minors as needed and are who they call up when injuries happen.
A good example of this to watch for this year would be Jay Harrison. He is the 6th defenseman meaning a bottom pairing guy and probably the worst defenseman on the team. However, he does fight and is pretty good at it so you get that extra element from him. Against teams that fight he may play in those games being the 6th d-man but also there for his fighting ability. In games against teams that don't fight he would be the guy to sit out because defensively he isn't that good and he wouldn't be needed to fight. So given the situation he and someone else would alternate playing. Both playing enough though that neither gets sent down. He is a 1 way contract and you wouldn't risk someone claiming him.
Unfortunately if you like the Hurricanes they're going to look a lot like the Panthers this season. The worst part is just about every team in the East has a serious enforcer, they're going to lose and be everyones bitch in the process.