Saturn led the invasion of egghead
As a result I think he’s going to be held responsible for the WG’s blunder in letting Luffy escape.
Given the last page of 1121, I do wonder if Saturn could get booted from the Gorosei due to his failure.
The final spread showed Garling and someone who looked very similar to the #2 holy knight.
With all the hype Garling has been getting, I wonder if Oda might have him replace Saturn as Gorosei. While he isn’t an immortal, perhaps immortality can be transferred somehow.
As punishment for his failure, Imu might demand Saturn transfer his immortality to Garling and step down as Gorosei.
Ultimately think it’s possible that Garling becomes a new member of the Gorosei, silhouette man becomes commander of the holy knights, and Saturn loses his immortality and just becomes a regular holy knight.
Kinda what happened to Snack after his loss.