Its just bad writing for Kid’s story to end like this and for him to just disappear without a proper conclusion.
It is, but you clearly got baited by Oda into believing that he is as big of a player as Luffy. In a hindsight, the tag team with Law against Big Mom doesn't matter.
Everyone on Wano was huffing and puffing for their god and savior Luffy looking above to see if the results from the rooftop are there.
Kidd and Law literally understood their place in the food chain and said to Big Mom: "We are not letting you go above to interupt Luffy.
If Kid’s story ends this chapter, he should die. If he doesn’t, then he still has a role to play. That’s just basic storytelling.
Oda doesn't kill people since timeskip started. He doesn't have the writing capabilities to make it relevant. Look Izo and Ashura.
Why give Kid plot armor and protect him from dying if his role is finished?
To become another addition to Luffy's cheerleaders who will aid him in the final war.
Being Supernova =/= meant to succeed.
Trust me on this one.