1) big mom willingly letting the strawhats arrive to whole cake island despite not having any advantage in doing so..she is in her own kingdom, she can attack them when they are miles away from sanji and never risking losing the most important chess piece in the enitre plan. Instead she goes as far as giving them a map through pudding..a map that they are using right now to escape....and remember she has a fleet at her disposal at alla times...so even if you decide that you don't wanna fight the strawhats on ground,you only need to give them the map and then meet them at see with your "angry fleet".
2) talking about the plan,it doesn't make any goddamn sense...why would big mom need to organize this big party exactly? Once germa arrived at the port of WCI they were basically in trap..they don't need a surprise attack..just imprison the vinsmokes the moment they put a feet out of their kingdom. Also,on a minor note..why a glutton like big mom would wait so much to eat a wedding cake that was never gonna be actually used as a wedding cake in the first place ,since the marriage was gonna end in blood before the bride or the broom say yes?
3) why would pudding keep the charade when she is trying the wedding dress with tamago? she never meant to actually get to the forest since it was all a ruse, so why would she try to get away from tamago, saying that she had to go somewhere else?
Neither her or Tamago knew that pedro and brook were watching,so she had no reason to try to go to an appointment she never intended to go to.
those are the first 3 that come to mind..but in the past i think that i pointed out other aspects that were really not that convincing..but this 3 still don't make any sense.
p.s. oh and pudding falling for sani for a single shallow compliment is really,really bad writing..Oda did it so much better back in the day with hancock.
1) and 2): Big Mom is a sadist. She enjoys playing with her prey, which is clearly represented with her playful nature (like spinning a roulette you will always lose, instead of just killing you immediately). For her the Strawhats are just a joke, she can play around as she pleases. This also explained, why she has a party and wanted to kill the Vinsmokes there. We have witness multiple times, that Pirates just want to do, what they like. Even if it isn't very efficient or smart (see Luffy).
Big Mom is a child, which is represented in her colourful, cartoon world, she created for herself, and her dark backstory. We also see, that her crew isn't very good organised, since they fear her temper.
Yes, all your points were all bad calls from Big Mom, completely underestimating the Stawhats, but nothing isn't in line with her character. Making bad calls aren't plotholes.
3) Maybe she wanted to kill the Stawhats in the forest herself? It isn't a plothole, just a way for Oda to keep the suspense of questionable alignment of her going. Pedro and Brook not being there, wouldn't had changed anything.
Also Pudding falling for Sanji because of the small compliment, isn't terrible writing. She just played the evil mastermind, but she is truly a complete insecure person, who just like Lola wants to be loved and free spirited. Sanji clearly meant his compliment (since he doesn't like lying to woman) and it just showed, how extremely fragile Pudding's façade is.
Again not really a plothole, you maybe don't like the direction Pudding's character takes.
and i say this fully knwoing that luffy and hancock's relatinship is nothing but a joke and as a guy that hates shiping in his shonen...but i actually understood why hancock fell in love with luffy...with pudding all i can think is "plot convenience" and the stubborn refusal by Oda to let an evil good looking girl stay evil...for some reason.
Well, this ends the discussion, since you clearly just want to disagree, since you don't like the direction.