I do somewhat agree with BD below that the final act was a little bit of a let down. The final fight is kind of drab and claustrophobic compared to everything else in the film, and once the story becomes about everyone chasing Deckard I started feeling a bit disconnected to what it was all supposed to be about.
So it was something like: Leto wanted Deckard so he could find his daughter so he could figure out how to breed Replicants so he could take over the universe.
The revolutionaries wanted Deckard dead so no one would be able to find his daughter, even though they want to be able to procreate as well?
And then at the end, I guess I wasn't quite sure what the implication was. I guess he'd tell her he's her father and she's either the child of replicants, or a human-replicant hybrid (depending on whether Deckard is or isn't).
But what does that actually mean, in terms of the wider story? I guess that could be left to be explored by the never-to-be made sequel (because this one is bombing), but I wouldn't have minded a bit more closure in this one.