Yeah, I was going to mention the Fox Sports "glowing puck" but decided not to. I didn't care for the effect, but thought it was a reasonable try...believe me, in the US, the "can't follow the puck" thing is incredibly frequent among non-fans.
I personally see no reason for the fights, but get the impression that the "traditional Canadian fan base" digs them (as does a certain element of the US fan base).
I agree fully about the thuggery. [Aside: I played in adult recreational leagues until turning 40. Fighting was of course "not allowed", but occasionally occurred. I made sure never to get involved, even to break things up - there's a huge risk of someone jumping in and blowing out your knee while you're trying to separate the combatants... ]