Okay, my take on the arena experience;
No more 'Make some nooooise!', replace it with kickass songs like "The Immigrant Song' and other rock and roll soundtracks. I heard someone say the same thing at the risk of sounding like a grandpa, he's not. Rock and roll songs bring out the excitement, craziness, and intimidation out of us. Secondly, let people bring in airhorns, firecrackers, huge flags, you name it, they're all welcome. Ok, fireworks should be reserved for game-winning goals in OT. Oh, and invite local bands to play their heart out dammit, I'm here for some entertainment, not to be placed in a senior's home! Small rinks in Sweden are beating us in that regard, like how embarrassing is that?! And most importantly, TURN UP THE GOAL SONG! I can't hear a goddam thing!
Oh, and a bonus: have people win prizes for being the best-dressed, the loudest, and/or having the most creative signs. This should overall improve fan experiences and kill the notion of having to be silent and on the phones all game long. This is my two cents, what do you think?