To be fair, Hell's Memories is technically Sanji's long ranged attack. Only thing is that Sanji only uses it on big opponents.
Remember, base Wadatsumi was as big as a mountain.
Then inflated Wadatsumi got even bigger, and on the first panel I posted above, Sanji is like a dot to Wadatsumi. So you could scale Wada as small island level and Sanji got a island level attack that spreads the fire around his opponent's body in a second.
As for this thread, I never really like the idea of Sanji getting Death Wink tbh. Rankyaku would be better as Sanji's ranged attack but then it would make Sanji a second Zoro.
Personally, I think Hell's Memories will remain as Sanji's only ranged attack.