#1. Sami Zayn was potentially written off for Saudi Arabia

It turns out that not only was Braun Strowman replaced at Money in the Bank, but Sami Zayn ultimately ended up getting replaced as well. The story going on was that Braun Strowman was chasing Zayn, expected to decimate him prior to the match.
Zayn did get decimated, eerily being hung upside down like a cross. The first speculation about who did it was naturally Strowman, but when Triple H confronted The Monster Among Men, it was revealed that he didn't do it.
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Bray Wyatt was the first suspect because of the eerie nature of the attack. As it turns out, it was Brock Lesnar all along. What's interesting is that not only did it achieve the purpose of getting Lesnar back, but it likely wrote Sami Zayn out of the Saudi Arabia show.
As you might now, he's a Syrian, something that has been feared to cause problems for him in the Kingdom of Saudi Arabia. This may have been a way of writing him out so he doesn't appear.