#4 Charlotte wins Royal Rumble and goes on to face Rousey
Charlotte and Asuka have proven themselves of what they are capable of with Rousey impressing the WWE Universal with her matches already. Both of them has established themselves as the top women in WWE right now. I guess, there is a reason why they both are kept on the different brand and that is they don't want two top of their babyfaces on the same brand lost their momentum.
According to me the possible scenario for this to happen is-- Charlotte faces Asuka for the SmackDown championship and loses it and then goes on to win the 2019 women's Royal Rumble match and decides to face "The Baddest Women on the planet Earth" Rowdy Ronda Rousey for the Raw Women's Championship ( I guess Rousey will be the champion by that time) and ended up main eventing WrestleMania 35.
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