I think he will. Brock is an attraction. But what other "attraction" or "dream matches" do you have left for Lesnar? Maybe a Cena match if you have a great story? Brock/Rock if you can get him for Mania? That's about it. You almost have to keep the title on Brock. That's Brock's story. Letting people climb to the top of Brock's mountain to see if they can knock him off. You take the title off Brock... and what's left?