Yeah, i mean, Killingham should've been troublesome to deal with before the Omen buff, or at least he should've been left untouched so his strength would still be a mystery. Sanji disrespected him way too much
If the Omen buff makes Sanji go from a neg diff to a mid/high diff it will feel pretty odd.. Unless Zaza is that strong, or if Killingham summons another MMA using Sanji's fears
But what is really going to stand out here is: how to kill them HKs. That would add more difficulty to Zoro and Sanji's fight, because even if they dominate S and K, them still be coming back (due to Omen perhaps) will be the real problem. And when the wings manage to kill S and K it will not only weaken Imu but will also hype them as HK slayers, just like Loki, added with the fact they were boosted by Omen
I would be pretty satisfied with that, would be a fitting and impactful accomplishment for the wings