SWC 2019 Rules

I was wondering this too

Also, I don't understand the chance of these things happening. Will there be 3 out of 5 possibilities active for every SWC week? Just different combinations each time?

It’s a challenge to the current champion. So, if it comes up, the champ must finish above their nearest rival (points wise) in order to maintain their title

In terms of the rarity, more often than not, you will see a normal competition with no special rules. On rare occasion, one or up to three of these may roll and be added to the rules of the upcoming competition. So yes, it can be 1 of the 5, or up to 3 of the 5 if the stars align

Ah okay, that makes more sense to me now. I'm not very thrilled about the champ defence option, I was actually happy I could sit back and enjoy the crown for the season
Do I understand it correctly that I could lose my cup immediately? It was hard work for 3 months in a row...
I like the other ones, though I don't really see the need for them.

Again, they'll be rare This won't be a weekly thing - so to see a champ defence round will be kinda like a 'wow' thing

'wow' but maybe we can skip rules that affect results from last year/season? (for this season)

Whether it’s rare or not doesn’t mean it’s never going to happen... at some point, someone is going to lose an achievement of 3 months of work due to someone else nolifing for 1 week. That’s not fair, and devalues the champ cup greatly. Besides if you could win the achievement in just 1 week, why bother trying to win an entire 3 month season?
If you want to add some sort of competition (which i dont think we need more of), the only fair way to do so is introduce an ‘haha i beat the swc champ’ kind of rank for that season.