In terms of surprising factor or development, Sanji because we already had hints Zoro was related to Ryuma / Shimotsuki. We just waited for the confirmation, which happened this chapter
On the other hand, Oda opened a path for Sanji's RS unlocking his exoskeleton, which for future developments is more hyped for him
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In terms of importance though, Zoro is more hyped it's linked to the fate of the country
With Zoro returning Shusui to the land of Wano indirectly implying it to a sign for Wano's misfortune leading to the country being controlled by pirates, ending, with the similarity brought up with the Sword God of Wano(with one of his legends being slaying a dragon over the capital) looking like a future foreshadowing of Zoro writing his own legend in the country as a parallel to Ryuma's
On the other hand, Oda opened a path for Sanji's RS unlocking his exoskeleton, which for future developments is more hyped for him
---------
In terms of importance though, Zoro is more hyped it's linked to the fate of the country
With Zoro returning Shusui to the land of Wano indirectly implying it to a sign for Wano's misfortune leading to the country being controlled by pirates, ending, with the similarity brought up with the Sword God of Wano(with one of his legends being slaying a dragon over the capital) looking like a future foreshadowing of Zoro writing his own legend in the country as a parallel to Ryuma's