Brock Lesnar is many things, but a talker he is not. His strengths lie in brute force, explosive offense, and silent intimidation. WWE recognized this for years, wisely letting Paul Heyman or others do the talking for him.
Now that he’s back, there’s no need to fix what isn’t broken. Keep the mic time minimal. Let his presence, stare-downs, and violence in the ring speak for him. If he must speak, keep it short and intense. Less is more with Lesnar.