for anyone suggesting Taker have anything to do with The Shield.
None of them should be in a singles match with him. All 3 are great but none are at a point where they deserve a Taker WM match.
A triple threat match makes even less sense. That is a lose-lose situation for all involved.
And putting Taker in a tag match is a waste of one his final few WMs.
As for what I can see The Shield involved with for WM...
One scenario would be Reigns/Rollins taking the tag belts with Ambrose in a singles match; possibly for a secondary title.
Another would be the triple threat match... but since it has been done already, it would be pointless.
Singles matches for all would be spreading them too thin at this point.
If they are not put in a match at all... then we wait to see whose match they get involved with.
Considering this is one of the least intriguing RTWM I have ever seen, finding out The Shield's role in all of this is truly the most exciting thing about it.