Which fandom shows Shanks less love? You mean the clowns in this forum? That like 5-10 people circle jerking and patting each others back. Shanks just won a strongest poll in Japan beating freaking Roger.
Regarding their role, the obvious one is getting beaten by Blackbeard. But that would be too predictable and I am starting to think Shanks' crew might be used to fight a different faction of antagonists.
Or they ARE antagonists. Not straight up evil villains mind you but people that will get in Luffy's way eventually. Go back and read every Shanks scene since 902/903. Something is definitely off about the character. Oda has made these subtle things noticeable that allowed peoppe to guess Kanjuro's betrayal.
Honestly, it kind of baffles me that people think Shanks vs BB is this massively set up thing, moreso than Luffy and Shanks.
Lets go back to where this shit originates:
1. Luffy's intent to actually fight Shanks:
2. His reaction to Luffy's 1.5 billion bounty. You cant tell me the author draws straight up allies this way without any actual sense of competition or ulterior motive:
3. His clear connection to the WG. In any context, it does not make sense. If its about BB, why even talk to the WG? Him being a threat to WG stability is just as bad as Luffy. Both lead to its destruction. Hell, finding One Piece is exactly what they are trying to prevent:
4. This scene (and the scene before it about Shanks blatantly stating he'll attack Barto)....
5. Not to mention the now known facts that he's likely a WG Royal Family member ("Fearland Family"l, was found on God Valley (where CDs used to also reside), has a weird scene with Roger where hes crying over something and we are never told (supporting hidden motivation), AND the fact that Oda has stated Shanks has his own plans for the New Era.
Im not saying BB and Shanks arent inherently tied together, but it makes little sense at this point for BB to repeat the same exact shit with Shanks that hes doing with Law, or if even theres this idea that BB would win considering every ridiculously notable feat Shanks has in this story. I could post 5 more examples of that if need be.
Tldr: People are fucking in denial about how strong Shanks is and what he represents in this story to the MC. There is very clear endgame motifs thrown around with the character that people are blatantly missing.