I would say that last year the on ice performance was related to attendance. It was the perception of the boring system that was keeping people away. The entire league was complaining about how Ottawa was making the playoffs boring. There were some lively debates about whether or not Boucher's system was too boring to watch. Whether those views were accurate or not is a separate debate. My guess is that the perception of boring hockey was enough of a downward drag on the team to lower attendance. Couple that with a lack of marketing acumen and the word of mouth that often drives ticket purchases was decidedly negative. I'm not saying that that is correct or that the hockey was indeed boring. What I am saying is that most people I talked to didn't want to spend a lot of money to watch a Boucher coached team. Also, I would add that most people in my circles were pretty much convinced that the other shoe would drop soon and Ottawa would be out of the playoffs. Who really was imagining that the team would make it to the ECF? Again, these were all perceptions that drove a negative narrative. The question I would ask is could the marketing of the team countered that? Was there any way that the Sens could have overturned that narrative with clever marketing? Because the hockey wasn't that boring. And it ended up being pretty exciting.
As for the Fall, I believe that it takes a little while to build momentum at the start of a season and for people to think about hockey again. In September/October the weather in Ottawa was really, really nice. But as soon as the team started to build momentum, they went on that trip to Sweden and then started losing. When the team had a chance to rebuild momentum with the outdoor game, Melnyk sabotaged it with his ill timed comments. It's like the past 10 months has been a comedy of errors for this club and the gutting of the staff levels within the Senators most certainly did not help.
Idk. If Boucher's boring system was the issue, attendance probably would have started off strong and faded as we learned what his system was all about. But last year, first 10 home games were even worse than this years averaging 15069 per game. The next 10 were a touch better at 16260 compared to this year's 15883. The last twenty home games were averaging ~17700. It's pretty typical for sales to improve as the games mean more, so no surprise that our team's attendance was better in the second half last year, and isn't likely to be seeing that improvement this year.
On ice product certainly impacts attendance, but in my estimation, the issues existed before the on ice product was known to be an issue (either because we were boring, or because we sucked).
I do think the idea of hope drives ticket sales though, so the perception that the other shoe would drop probably hurt matters. It doesn't help that coming off a successful season, we were perceived as to have made our team worse by losing methot and not replacing him via UFA or trade. We basically were seen to have stood still, lost a key piece, and were coming in with injury question marks for Karlsson and Brassard, so that may have hurt things. The marketing nightmare that is the tarp probably didn't help either.