#4. A lot of multi-person matches
Since WrestleMania is the biggest show of the year, WWE has always had the mentality that it's too big of an event for anyone to miss out on. As a result, they make sure to do everything in their power to get every superstar on the card in some shape or form.
Because of this, not only do we have Battle Royals for both men and women, but we also have a lot more multi-person matches as well. After Fastlane, we can already confirm two multi-person matches that are happening.
Gable & Roode and Aleister Black & Ricochet indicated that they're still in the RAW Tag title picture, while the Women's tag title picture will most likely feature Beth Phoenix and Natalya reuniting to take on Nia Jax & Tamina and Sasha Banks & Bayley for the Women's tag team titles.
Expect more multi-person matches.