#1 Citrus Bowl
There's a reason why Orlando is already planning another WrestleMania bid - because it's a great city to host the showcase of the immortals. The weather is always great, it's the home of NXT and the Performance Center, and there's always plenty of things to do when the wrestling isn't on.
Because of that, we think that WWE should turn to the Citrus Bowl aka Camping World Stadium for SummerSlam 2019. They're probably going to have to wait at least a few years before they can host Mania again anyway, so they may as well throw all of their eggs into the SummerSlam basket in the meantime.
Plus, and this is a personal choice, we'd like to see the return of 'Greenlight' by Pitbull as the official theme song.