Aldo is in the Hall of Fame, but he's still fighting. And I don't see any publicity for the fight he's going to take part in from the UFC or the fighter himself. The focus is solely on Pereira, who has already shaved his head as usual and is in war mode! I really believe he'll keep the belt. I even saw him practicing takedowns, something you don't see every day.
Being in the Hall of Fame I think won't make him more money. He needs to keep fighting too, all for the habit of fighting.
But his popularity is overshadowed because Pereira is the main event yet Aldo is still in the main card which I count very much. His last fight in UFC Brazil still made him look very exciting. But there are other known names on the list such as Pennington, Pena, Thompson, and Holland. UFC 307 is still a pack of great fights.
We may be seeing Pereira fighting someone who will take him down to the ground.