I think you have misunderstood many things.
- If they follow Croco, it's not because he's the leader, but because he has a crew and wants to increase it. Mihawk just like you said is a lone wolf. In fact, if anyone is the "leader", it would be Mihawk. He has the greatest reward, he would be the choice as Yonko if he were not with Buggy, something he does not want and that is why he spares his life and it is precisely Mihawk who decides to spare Buggy's life.
- As for Utopia, it is not something that has become Mihawk's dream, in fact it is presented as Croco's dream only. But ti end they are in an alliance, they have to collaborate and the more power, the less they will bother Mihawk. It is a win-win.
Mihawk for now is still the same character. The only thing that he has changed is that now we are given hints of what will be in the future. He has to be developed so as not to be a mere rival to Zoro.
- If they follow Croco, it's not because he's the leader, but because he has a crew and wants to increase it. Mihawk just like you said is a lone wolf. In fact, if anyone is the "leader", it would be Mihawk. He has the greatest reward, he would be the choice as Yonko if he were not with Buggy, something he does not want and that is why he spares his life and it is precisely Mihawk who decides to spare Buggy's life.
- As for Utopia, it is not something that has become Mihawk's dream, in fact it is presented as Croco's dream only. But ti end they are in an alliance, they have to collaborate and the more power, the less they will bother Mihawk. It is a win-win.
Mihawk for now is still the same character. The only thing that he has changed is that now we are given hints of what will be in the future. He has to be developed so as not to be a mere rival to Zoro.
Crocs idea
Funded by crocs money
Fulfilling Crocs Dream
Yeah crocs the leader