My only question is how.
Sanji doesn't have strong haki , Nor a strong Devil fruit , nor a strong Weapon , Nor does he have Monster Physique like Garp / Coby / Kuzan.
Power of love? Is that the best reason you can come up with or there's something better lol. Raid suit was possible power up but oda destroyed it.
Fair question and one that I cant answer myself either but we shouldn't even bother to try and guess a logical answer for this.
Sanji is a semi-gag character and such are powering up through gag ways, power of love is indeed one of those ways...
I don't know what it is nor how it works but we got a hint that it does impossible things like kicking lasers...
If I had to guess, based on his previous power-ups, I would say it will be achieved through insane heat.
If Sanji wants information on an ocean like the all blue, the Environment god would know more.
I think you should subscribe to impossible dreams to have a sense of what the All Blue is.
It doesn't exist, it probably never existed either. Or maybe it did, long, long ago before the planet's terraforming with Red Line and whatnot... It could simply be a dream of many chefs considering >people's dreams never end...
And it will likely be created through Sanji's powers so try to guess bigger other than just getting info on it from someone...
Sanjino is supposed to do what no other can do so apply that to the All Blue.
Sanji will have to create it most likely. How? In a way that no other can replicate it.