Further musings.
While the Monarchs and UNH are both hockey it's a bit of an apples and oranges comparison. For a lot of people in their mid-20's - mid-30's the Monarchs were part of the larger idea of a 'night out', at least with people I knew. They'd go to the game, hit the bars after, and get up to whatever else for entertainment in Manchester. Durham doesn't have that same draw. Yes, it has bars, but they're college bars, and unless you're an alum it's probably a bit awkward to be in your late-20's/mid-30's hanging out in a college town in a college bar surrounded almost entirely by 21 and 22 year olds; it's something most probably feel they have grown out of by that age.
The Monarchs, just like most levels of pro-hockey from the mid to late 90's on, relied heavily on casuals. That's not to say they didn't have regulars or die-hards, but it's a different experience to UNH. From my time at the Whitt it's been almost entirely based around regulars, and when regulars would leave for the most part they'd be replaced by new regulars - there's never really been a casual fan element, even at the height of it's popularity. The problem they ran in to is that the number of regulars who stopped coming exceeded the number of new regulars they could get to buy in.
Now, you can certainly make the argument that "a dollar is a dollar, bring on the casuals!", but I'd honestly hate it if that were the Whittemore Center experience; large groups of people who are only there for the night and have no emotional investment in whether the home team wins or loses. But, a dollar is a dollar.