My section was about 50-50. I have to say the opposing fans there were well behaved. When other sections started yelling during God Bless America*, they kept their mouths shut. When Chicago scored, they cheered, but did not jeer. They were drinking, but not drunk. They were polite, both children and adults. So I have no issue with the ones in 219. That said, I still left after the empty netter.
As for selling your tickets--I have never sold my tickets for profit anyway, and I certainly wouldn't begin by selling these to the opposition. But I can't fault someone who can literally pay for their season tickets or at least justify the expense for them by selling a pair of tickets to opposition fans. I know of people who made a killing by selling their voucher tickets in the past by reselling them on the open market--and their best price came from the opposition. Some will occasionally put their own finances ahead of their love for the team--that does not make them any less of a fan, in my opinion, but it certainly does contribute to the loss of home team advantage.
The important thing here is crowd control. I saw no issues in my area--not in the concourse, not in the restrooms. It's a small area, so security was sufficient. There is no AYCE option there--no "Adult" all you can drink option, either. Maybe that needs to be re-thought for certain games for the third tier sections.
Edit: I don't think the Preds would have any problem with you buying up all the tickets in your section when you have the ability to get extras. How would they know what you're going to use them for?
*Rats. They figured it out. Time to go back to the anthem. That quietness at the beginning when you know they're thinking, "Huh?" is priceless, though.