I don't know why people are annoyed by Cena eventually taking the title. Its extremely likely it will be the main event of Mania meaning Styles would have a long reign, Styles has three pinfall victories over Cena and its a slow burn well told story so far. On top of all that Cena and Styles have had the best matches in WWE this year and the best promos of the year too. There is absolutely nothing wrong with Cena taking the belt to tie Flair and get one final run with the belt. Would you really want his last World title reign to be his 2 month reign that ended to a Brock Lesnar squash match?
I, for one, wouldn't hate Cena dethroning Styles.
Styles is already a star. Owning 3 pinfall victories over the face that's been running the place for the last decade is an amazing accomplishment.
People should get over the fact that Cena will tie Flair's record, it's inevitable. Hell, he might even surpass it.
Plus, their last singles match at SummerSlam was fantastic. The next one is likely to be the same. So, if Cena/Styles get to ME or at least co-ME WM, then that'd be amazing.