Too far away.
There are worse uppers than Barclays. Prudential Center is just as bad. Montreal, Staples Center and MSG are worse. I haven’t been to Excel yet, hope to get there this February.
The vast majority of nhl arenas will have worse uppers than Barclays. The newer arenas are incredibly high - try going to Montreal or Chicago ( and they aren't even that new). Nassau and MSG have low roofs so NY fans are a little spoiled. Islanders fans are passionate, but part of the reason we seemed so loud was because of the low roof. Put Montreal fans in Nassau and they'd blow off the roof.
One thing I've noticed is Barclays has really high railings, so many of the first and second row seats are blocked. That's a bummer for someone not familiar with the arena and looking for tickets. That was my main complaint.
Last year I bought a ticket on stubhub that was near the corner of the lower bowl. Now I may have over-reacted because I only gave that seat a chance during pre-game when the lighting on the ice wasn't fully engaged, but i thought the view through the glass behind the goalie was way too distorted, and then the glass on the side of the ice was also distorted in an even worse way. I thought about the six hour drive and the $180 i dropped on a hotel and decided I wasn't go to settle for a s*** seat. So I ate the $70 and immediately got on stubhub to get a different seat and walked around the arena to check out the views. Thirty minutes before the game i paid $65 for a seat in 123 that was drop dead perfect, my view was just above the glass. When I accessed stubhub there was a row of six in my aisle (I got the aisle seat as an unexpected bonus!). Right after the anthem, two guys sat down next to me and told me they just bought their seats for $35 on stubhub. The aisle filled a few minutes into the game, I didn't even ask the others how much they paid.
So even after eating a ticket I paid $135 for one of the best seats in the house... probably typical in the nhl. I go to Boston and Montreal for biz a lot but I can't afford those games. Barclays center isn't great, but after being spoiled with dirt cheap tickets at an arena with the best viewing lines in the NHL anything would seem bad to Isles fans.