Only one HE team drew 6,000 per game this year - BC - and they just barely did it in a nearly 8,000 seat arena. I'd rather see the building be a little too small than too big. I went to grad school at Cornell and Lynah Rink, while holding slightly under 4,000 fans (it's a little over that now post-renovation) absolutely rocked because it was packed to the rafters and the fans were right on top of the ice. I've been to games at BC and even with 5K+ you don't get that same feeling in a much larger building. Even BU, which now has a 6,000 seat arena of its own draws slightly over 4K per game. I haven't been to Agganis, but I'll bet it doesn't have the same feeling as when they packed the much smaller Walter Brown Arena.
Agganis doesn't come close to the atmosphere of Walter Brown, but then again, nothing did. That said, WBA had terrible sightlines, you couldn't understand the PA because of the echo, one corner of the ice couldn't freeze properly..... A new arena was necessary and it's been a huge step forward for the program in terms of recruiting. BU's attendance numbers this season aren't the best to look at since it was one of the worst seasons in the history of the program, coupled with the ticket office's insistence on maintaining the highest ticket prices in HE - they've been dropped for 14-15 already. BU consistently has been drawing ~5K on average since the arena opened, and when the program was doing better, was sold out for many games.
UConn really ought to aim for a 5K arena, a la what Notre Dame did with Compton. You have to remember with respect to the Boston schools, there are so many teams condensed into a small area, that there's only so many fans each team is necessarily going to have. Within a 50-mile radius of the city, there's BU, BC, Northeastern, Harvard, Lowell, Merrimack, PC, Holy Cross, and Bentley. If you uptick that number a little more, you can include UNH. UConn doesn't have that problem, as QU and Yale are the only real "competitors" and both are situated far enough away. They might not draw 5K initially, but it's a realistic number to shoot for as the program continues to grow, and it sets the school apart from the lower level programs in the AHA and ECAC. Plus, if the school is going to use hockey as any form of a selling point to gain B1G admission, a tiny 3K arena won't cut it.
Matthews is a nice place, though I find it overrated. 99.99% of the history that occurred there has absolutely nothing to do with Northeastern hockey or success, and did not occur when NU even owned the building. Not to mention in their recent renovation, they moved the press box to the other side and created a host of obstructed view seats. If you're not sitting in the front row of the upper balcony, your view of the ice is utterly atrocious. And they've still got a bunch of seats with Fenway-esque pillars blocking your view. Don't buy into their rhetoric of how "awesome" they think the place is.
Lynah, I would love to visit sometime, I've heard it's an awesome place to see a game, but unfortunately BU and Cornell will be playing all games at MSG for the foreseeable future.