I mean, the only thing I'd say was directly taken from Year One would have to be Jim Gordon. That whole Good cop, stuck in a corrupt GCPD thing is all Year One.
But, Loeb.....Flass......drastically changed really. In some ways, Falcone too.
And yeah, there's homages.....like the Bat-swarm device.
Batman, I'd say, is totally different though. Much more focused by the time he retrurns to Gotham....whereas Miller's Bruce/Batman is still very much lost....not as direct.