So let's restart, because we are obviously not getting our points across. To clarify, a lot of my answers are not what I believe, or what I have thought about, theorized, etc. I am just telling you what has already been discussed over and over again in this and past threads.
My stance has always been: Wano will not present a new crew member. I may have thrown a quick joke prediction here and there. Regardless, my statement still stands.
#1 Cabin boy/apprentice hasn't been shown for Momo. He hasn't shown interest in venturing out. His goal aligns with Wano and nothing else so far.
The cabin boy argument for Momo was not given because of his actions in the manga. It comes directly as a response to: "if Momo joins, what would his role be". To which some members replied: cabin boy. The desires to go to sea, from what I understood, were along the lines of following his father's footsteps and traveling with the pirate king like Oden once did. If you want to add that Momo has an older sister better suited for ruling given their age gap. Momo MIGHT not need to stay in Wano, or viceversa.
Now to clarify, Momo's desire to travel like his father did does not need to happen with Luffy and the crew. Momo, his retainers and the Minks can form a different faction to do so.
As far as Tama, it was for Ace, while Carrot was apparently and directly expressed for Luffy. Not only did she want to pay them back, she selfishly wanted to venture away from Zou. Those are selfish and honorable reasons. So her argument as an apprentice is, again, way weaker than Carrot as lookout in the Crow's Nest. Not only in role, but reasoning for joining. As you said, Tama was for Ace, no signs pointing to her wanting to go with Luffy.
Ace is dead. Her desire to go to him, no matter how deep, will NEVER be fulfilled. But, what a coincidence, she is saved again by a pirate, that happens to be Ace's brother. And Luffy already reminds her of Ace even without her knowing they are related. And she cares for Luffy and what Luffy has done to help her, for her to selfishly and honorably attempt to aid in his escape instead of sitting on her ass, waiting. It is not about Ace anymore, she is thinking about Luffy. In other words: Tama is right now, in the equivalent of Carrot stowing away on the Sunny before WCI.
We are still in the part where she is going to help. We haven't seen what she will do to help. Be it to use her kibidango against Smile users, or whatever else Oda may have in store.
#2 Why would anime filler be shown in the manga?
It does not, which tends to mean, it is not to be taken as canon.
I clearly provided an example of Zoro's aura surrounding the swords as a hint/spoiler that the anime tends to display. Then it finally appeared in the manga in 937.
And I was asking, when did this happen? What episode/arc. I was at work, so I couldn't be more specific about it.
#3 Carrot has not fully expressed a specific dream like Tama has. That is why I said that Carrot lacks there.
I was saying that I find both of their dreams to be vague.
#4 Again, I have never formally expressed any feeling of someone joining at the end of this arc. I've actually clearly stated otherwise.
That's okay. Me neither. The point was that even without doing so, we both can talk about what other people express as their candidates. And criticize, agree/disagree with those points without having an investment in the argument. To me, someone that believes we have not met the new crew member yet, see both Carrot and Tama in the same plane for candidacy. You disagree, and that is fine! It does not mean what you say is a joke, nor what I say is a joke. As I showed with Carrot = Tama points above, to me, it is the same.
#5 Tama and Luffy's relationship is not deeper than Luffy and Carrot.
I disagree. Luffy and Tama are both clearly invested in each other. Luffy exposed himself to save Tama, something that I am sure he would do for Carrot too. In the short amount of time Tama has been with Luffy, she already gave him her only food forcing her to drink poisonous water. Luffy has saved her three times. Luffy HAS made a promise to her that she will be able to eat a lot more food once Wano is over. Just because the relationship is in development does not mean it will not be there, or that it is not. If you want to compare Luffy and Carrot relationship in their first 30 chapters, there is nothing. That is not even taking into consideration that Luffy knows what Ace promised Tama, and that Tama now knows Ace is dead, "freeing" her from their promise and allowing her to develop new promises.
Tama is through Ace and Luffy just met her. Luffy has ventured through Totland with Carrot, lost Pedro, fought side by side and Carrot has helped the crew outside of Luffy. The reason why I don't believe that anyone is serious with a Tama candidacy is because Carrot isn't even a strong candidate and her argument is way stronger is Tama.
What Carrot went through WCI, Tama will now do so in Wano.
- Carrot has shown that she can be a lookout and Tama hasn't
Tama does not need to show she is a lookout. For all Luffy cares about, she could just be the ninja of the crew.
- Carrot was shown working, falling into antics, emotional moments and gimmicks with Chopper, Nami Brook and Luffy
Tama has already shown many emotional moments with Luffy including wearing his treasure (straw hat). She is now falling into a prison break antics by following Chopper, so there is plenty of room for her to show their chemistry.
Carrot is a candidate, but not that strong. So to even throw Tama in there is almost a joke
That is fine, I think the same about Carrot. Because, to me all her story beats are for her to become a leading figure. I mean, not for anything she was shown in the current Wano map alongside Dog, while Wanda and all her seniors, were grouped together.