#1 Make Roman mute for the remainder of the feud
Roman Reigns does not need the microphone to prove a point. In fact, he does more harm than good when he has a microphone.
Watching your principal babyface come out and whine again and again makes no sense. It doesn't endear him to the fans, nor does he pull the story forward in any constructive way.
If the Big Dog has been beaten by Lesnar so many times, why would he still want to talk a big fight? Shouldn't he become a character that is uber focused on just winning and not trying to talk a big game?
The story would play out perfectly if he is goaded by Heyman every week on Raw, but Reigns chooses to be the bigger man and not respond.
Letting all of Roman's supposed frustrations out in a single match against Lesnar would be a far better send-off to this feud, as compared to Reigns talking every week about how he won the belt at the Greatest Royal Rumble.