#2 Andre The Giant Memorial Battle Royal (Winner: Lars Sullivan)
Just like the Women's Battle Royal, this match also has hardly any significance. Therefore, by the same logic, i.e. for the sake of bragging rights, I would have a heel in need of recognition win this.
This match can feature up to 30 wrestlers comprising of under carders from Raw and Smackdown, maybe one or two legends and some mid-carders from NXT. The final four can be Sullivan, Mojo Rawley, Tye Dillinger, and Kane. Sullivan can win by last eliminating the legendary Kane, which would give him an even bigger push.
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#3 Gable and Roode (Champions) vs AOP vs The Revival - Triple Threat Tag Team Match for the Raw Tag Team Championships (Winner: The Revival)
This assumes that Gable and Roode would win the tag titles from AOP before Mania. The Revival can be added to the fray to save this already lame feud from the mundane course of rematches and can also get their much-needed big win.