The set-up for Mihawk hype is there but our actual problem is also Oda himself. His writing style especially post time skip doesn't help Mihawk's case.
Mihawk needs some feats that will free him from the Marineford writing shackles if you know what I mean.
Marienford was trash even in itself. No one feared Mihawk, in reality Vista should sweat even from the thought of clashing his swords with Mihawk.
Shanks stopped the war and no one wanted the smoke with him, no one was bothered about Mihawk's existence if we have to stay true to the source material, even if he is walking Top Top tier, his portrayal is so trash.