I genuinely have no idea where the pudding plotlines leads. I was already surprised oda brought her back that important, he also did special thing where intersected the cover story with the mainstory which he also never did before
He cooking something
I saw someone suggest hes gonna use her to find the truth about Gods Valley from Garp and anything else he knows like Xebec specifically too ofc. Any dirt on the WG, Celestials, Marines and such.
Granted he originally was meant to have Koby and idk if he planned to get Pudding before that too, but I imagine Puddings DF could be used to extraxt memories from a location or even from specific objects to get their history and who interacted with said object or within said environment, how, when, why etc. It might be more of an awakening type ability but I hope its more base level stuff as there must be a lot more to her fruit too ofc?
Given Oda depicted it as a film reel and had her cutting out the memories, she can implant fake memories too im sure, so "free brainwashing" too and thus easy way to manipulate important people and maybe he will try to use this to have himself seen as a hero/good guy or and even Xebec too by the world.
In fact I remember Pudding using an AOE mind wipe ability on the forest homies when she was with Sanji too?
I can't wait to see what else her DF can do too but I hope it doesn't get to stupidly ridiculous levels like Bonneys, Sugars and Boas fruits now too but we know it will though regardless ofc!