The cast shifts as often as a soap opera, it's how they keep it fresh.

The plot is always the same. Except it does change ever so slightly every year, making it even more difficult to follow for people who don’t normally watch.

Give it another 15,000 years, it'll get more interesting

Ironically enough, the excess of concussions nowadays are due to overly protective gear. It gives them a sence of protection that leads to more violent tackles, which then leads to more violent headshakes.

It's like when they introduced gloves in boxing. Pre-gloves, it hurt like a motherfucker to hit someone in the face. You'd have just as big of a chance to break your hand as the opponents jaw. So they had to make the gloves 'hurt' again by making them thinner.