Ill be honest, Hogan vs Austin would be garbage. In fact, it might not have even been good in 2002. I dont see them clicking at all chemistry-wise. Hogan needs to just sit tf down, he's too old and injured, he's had countless back procedures done and now that he feels healthy he wants to go back in the ring?
Rock vs Brock is perfect but i dont think 31 would work with those being the top 3 matches because its almost guaranteed Sting/Taker and Hogan/Cena will be bad. Maybe Sting/Taker will be able to work psychology-wise, maybe they can work a diff style of match that doesnt involve high flying/life threatening moves. But the last matches we saw the both of them in sucked (well, taker vs brock was alright)
This card wouldve honestly been perfect if all this was happening 12 years ago. They should put HHH with Sting, maybe have Cena vs Bryan II at Mania and then Rock vs Brock.