I dont think WWE ever had any intention of having Brock Lesnar run-in on any match tonight, thats my opinion
now, 2 things
1, maybe the whole thing was a hoax to begin with, it is April Fool's Day after all
or 2, WWE just didn't want to detract from anything tonight, and are just saving it for Raw tomorrow
WWE accomplished 2 things, if indeed Lesnar signed. 1, more PPV buys at the eleventh hour, and 2, more people will now tune into RAW expecting him to show up there, leading to more ratings
After watching WM28, i have to say having Lesnar coming out during Taker-HHH or Cena-Rock would have felt........forced. and not needed
Now, i believe its been known Rock was going to be on the Raw after WM, so having Brock come out then to challenge Rock for WM29. Is a possibility
Or, maybe Taker comes out and gives some sort of fairwell speech, and Lesnar interupts that and leads to a Taker-Lesnar match.
But here's why i don't think Lesnar-Taker happens. For one, Taker's time in the ring is edging ever so closely to being up, they should have him feud with a younger guy to help push that guy over the top to elite status, and not waste it with Brock
Secondly, Brock-Taker just feels like another HHH-Taker, Taker would have then faced the same type of match 3 years in a row. Lesnar-Taker would undoubtedly be some slobber-knocker type, slugfest that we have now seen 2 years in a row.
Here is my whole opinion. The ROck just goes away. Having him wrestle again will take away from this years event. He has his perfect send off match, in his hometown. he is NEVER going to be a fulltime, or even parttime WWE employee in the ring again. Odds are he thanks the fans and heads back to Hollywood
Which brings me to, if Brock truly is coming back, have him face Stone Cold, or maybe even Sheamus.