#1 Bobby Lashley
Fans would be sent into a frenzy if 'the Destroyer' was to make his comeback on the night after Mania, and straight away, went after 'the Beast Incarnate' Brock Lesnar.
A Lesnar-Lashley contest is a 'dream match' fans have long asked for.
According to Dave Meltzer, there are certain clauses in Lesnar's contract that extend his deal up to August. So, a Summerslam clash between the two mammoths is a huge possibility.
The night after Wrestlemania would be an ideal stage to kick-start this rivalry. This would keep casual fans interested in the product, and draw huge ratings for RAW.
Lashley could be the one to finally knock Lesnar off the top, and start his second run in the company with a dominant win over Lesnar.
'The Walking Armageddon' would also make an ideal opponent for superstars like Reigns, Strowman, Rollins, and so on.