Let's be real if Sanji actually went back to make Big Mom a spectacular meal, one that satiated her urge for the wedding cake, she would want to keep him on the island as a chef — which would mean another fight with Luffy so we're back to square one.
Why would she just kick Sturs to the curb after all those years just over the one cake to satisfy her disease when Strus will continue to do it willingly? And that even if she has that disease anymore.
Why would Sanji make a cake for her? What does he gain from it? We saw how Jinbe gave Big Mom croquembouche and she still wanted to kill him and his crew. She's just going to let the SH get away even though she's already declared that she'll never forgive them?
Whoever is there can just make a cake for her. That's most likely Streusen. Streussen's food is only shit tasting when he uses his power to make it. If he just made it without using his power it would be fine. He's the one who made the original wedding cake, the same cake that Big Mom craves.
The arc emphasises his kindness and shows he is willing to save even scum like his family, even if the BMP are evil they don't deserve to be slaughtered by an unstoppable rage monster like this especially Pekoms and Pudding thats even to dark for Oda in the current time to take out a bunch of people like that. Leaving now puts there friend to death and Luffy was ready to fight Capone over what he did to Pekoms and I doubt Pedro will just leave his "brother" there to die.
Pekoms even after all this knowing the plan and what Big Mom does is still loyal to Big Mom and believes in her dream I doubt he just gonna willingly leave like this, then there idea of Pudding begging.
Stursan made that cake over three days with amny other chefs whom are all dead, he cannot just whip up this cake without some help and Pudding will not be enough.
Sanji has shown he is a miracle worker when it comes to food and cooking through out this series, look at his cooking at Punk Hazard feed every single person there the crew, law, the kids and all G5 marines which last time I remember there was 35+ group of people, he still has 99 recipes and skills of the Okama kingdom under his belt from his training to help bring this bitching cake up to speed with Pudding and Strus help along with the other charlottes.
And even then its not just the cake its revealing the truth to Big Mom that her entire life was built on this lie, its not just a mere happenstance that there two people (one in close proximity) that knows the truth of what happened where Big Mom clearly doesn't know all the facts in the same arc with a memory manipulator. I doubt you will have all parties with a good enough chance, she can easily forgive them when she learns what Mother Caramel had in store for her with planning to sell her off.
Even now they still aren't there with escaping there still within the vacancy of WCC you can see it on the background/foreground of it being on the ground and on the map there not to far away that Big Mom in her rage form can't just stumble into them.
In an arc with so many twist and turns with turning people expectations on there head I'm surprised more people aren't at least plausible of the idea or just dismissive when through out this arc there been logic holes like this and ones that explained previous situations away. I mean you can not like the idea more power too you but I wouldn't be so dismissive at this prospect just yet.
No I find the idea ridiculous. Than what she lets them go? If she likes the cake she'll want sanji
If anything pudding is off somewhere making one
While she will help this shit gonna need to be a group effort.
Though I surprised your aganist the cooking idea since Sanji wasen't got a W through fighting, and he can get one through cooking