#4 PG restrictions could affect his character
The Fiend Bray Wyatt is the darkest character in WWE today and it's not even close. While he hasn't really done anything that warrants a "Non-PG rating", it's possible that WWE may make him tone the character down due to the PG restrictions.
The PG rating is very important to WWE and one that has resulted in them making more money than they did before. Since many children are viewing The Fiend on nearly a weekly basis, there may be some sort of fear that The Fiend will negatively influence the younger demographic watching.
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As a result of that, they may keep some PG restrictions and tone down his character considerably - one that would surely put a screeching halt to any momentum that he has.
While we'd like to say with full confidence that it won't happen (and in all likeliness, it may not), there are so many different factors that come into play in situations like these - many that we're not aware of at all.