Let's see. .. first i'd keep him the FUKK away from Finn Balor. I don't even wanna see them in a pic together much less a ring
Def gotta get that belt back onto him by the Royal Rumble. .. strike while the iron is hot. .. and expand his moveset beyond suplex spam fest a tiny bit. Brock will sell if you give him something to sell so before people start crying about "realism" with him working with smaller guys dead that stupid shyt. He constantly referred to himself as a bully who liked to pick fights in his UFC post fight presser,
that's an opening for Cessaro, Owens, Zayn, Rusev. .. yes they need to lose BUT in defeat they can get some of their shyt in and be "bigger" from the rub. Use Brock to elevate the mid card to the upper mid/ main while finishing the Shield story over the title. It can be done