Partial Source: The Wrestling Observer Newsletter
The original plan for Shane McMahon’s return to WWE was for him to appear on TV leading up to WrestleMania 32, work the match with The Undertaker and then be done. Following the big reaction he received when he returned and the fact that live events tickets increased following his return to the company, the decision was made to keep him around as a weekly character on television. The decision was then made to do a brother/sister angle featuring Shane and Stephanie.
Also, the current plan is to have Shane and Stephanie McMahon feud in the coming months, with Stephanie eventually becoming frustrated and losing her “nice girl” attitude. Although this is not confirmed, the rumor is that this would lead to Triple H and Vince McMahon returning to try to “smooth things over” between the two. We all know how that works with yet another McMahon family feud.
“When ratings are down, you bring back the McMahons!” has always been Vince’s motto.