Sorry but youre wrong about WM26. One of the all the all time greats HBK in his last match should be the main event. When Taker decides to retire his last match should be the main event, same goes for the Rock, etc. Some newcomers who cant wrestle like Batista and Cena should not be in the main event over HBK in his last match. Besides how many main events has Cena already been in at Wrestlemania?
Newcomers who can't wrestle? What the hell are you talking about? We're talking about the two guys who were the most consistent main event wrestlers for the past five years at that point. And both were great wrestlers and they had an awesome storyline. Since Michaels was going out it would have been appropriate for the current stars to shine in the main event. To answer your question about how many mania main events Cena had already been in, it was two. That's half as many as Michaels at the time. Michaels could have still had his sendoff earlier in the night but the title match should have closed the show.
And by the way, this was not intended to be fantasy booking. No Hogan vs. Flair or Hogan vs. Austin. Keep the card as it was but just change the order.