Loki and his many feats and Portrayal
This man is not a Strawhat.
As a baby the man already possessed 5 year old Big Mom level strength tearing a grown bear to peaces. Then began climbing his way out of hell itself
Flash forward a bit and he once again displays yet another absurd feat for a child. This time replicating Kaido
6 years prior to the current day nobody in all of Elbalph could stop Loki's reign expect for only 1
There has never been a strawhat will that level of powerlevel hype and portrayal. Not even
Jinbei
Also getting invites to join the crew is not at all some kind of guarantee or "he looks better because he received an invite"
This is a common quirk with Luffy and it doesn't always amount to anything.
Loki's personality doesn't really work as a subordinate, Loki is meant to rule as king. As the only true heir he has much more important things to do.
And no Harjudin isn't going to become king. He is literally a bastard child brought up in this chapter alone lol.
Harjudin is the John Snow of One Piece.
King Loki will join the crew. His power is overwhelming and completely disrupts the wings dynamic, his bounty is well over 2 billion making him worth more than Zoro and Sanji
combined, and the throne will need its king.
Loki is clearly being built up to be an extremely powerful alley for the final war, but not as a main crew member. You simply cannot have someone that strong and have him overshadow everybody else by a wide margin. The main character is already doing this, we don't need two lol.