So, barring any unforeseen changes, the WrestleMania card is looking to be:
Triple H vs Roman Reigns - World title
The Undertaker vs Shane McMahon - Hell in the Cell, with Shane getting control of Raw if he wins
Brock Lesnar vs Dean Ambrose - Street Fight
The New Day vs League of Nations - Tag Team titles
Charlotte vs Sasha Banks vs Becky Lynch - Women's title
Chris Jericho vs A.J. Styles
Kevin Owens vs Sami Zayn vs Neville vs The Miz vs Dolph Ziggler vs Big Show - Ladder Match for the IC title
Kalisto vs Ryback - US title
The Usos vs The Dudleys - Tables Match
Andre the Giant Memorial Battle Royal
Brie Bella vs Lana
Just taking a stab in the dark with the participants in the ladder match based on who has been doing what over the past few weeks.
Brie and Lana getting a match seems quite random but is likely just an excuse to get all the women not in the title match onto the card, much like putting all the extra men into the battle royal. It could also be a good way to get Daniel Bryan to appear in front of the Mania crowd. It would be quite the striking visual if Bryan's Mania swansong saw him being lifted up by all the women on the roster to do Yes chants. The vegan/virgin nerd comes full circle.