Honestly, I wouldn't rag on Mihawk as much, if there wasn't a pattern to his character.
Hunts down fodder because he's bored.
Goes to see Shanks, who asks if he wants to fight, he declines...
Goes after preskip Luffy during Marineford....
Faces off against a Yonko Commander, and suggests they fight at a different time...
Red Haired Pirates shows up, and he peaces out.
Get's excited that Marine fodder are coming after him, cause he hasn't felt like that in forever.
Doesn't want to support Buggy going after the PK title, because it involves fighting against the Yonko...
Oda, seriously needs to break this pattern of Mihawk enjoying going after fodder, and then backing down when faced with a strong opponent. It's really not a good look.