I don't know what to think about that Luffy/Zoro situation. I want to be hyped, but I cannot, because I don't know how the Gorosei could be any special. We know of every single ability in this verse. Making them stronger than current top tiers, who all have everything that a character could wish for, is practically impossible. We know of uber powerful DFs, we have seen awakenings, we have seen CoC infused attacks on all kinds of attack types, we have seen FS.
Even if he is someone with an op DF, it's not like that guy that accompanies him, isn't already that and more. Characters who are DF centric imo have the admirals as their clear cap and characters who are swordsmen and haki centric fighters simply have guys like Shanks and Mihawk as their cap and pretty much Luffy and Zoro already aswell in a way. And let's not talk about physical stats, when we have seen guys like Whitebeard, Kaido and Big Mom.
Either Oda is coming up with a completely new ability concept, that only they have - which I highly doubt - or Saturn is still just a seraphim plot device. And that's why I don't know what to expect from that Zoro/Luffy situation.