I like pretty much all of the versions, only wishing that the actual voiceover dialogue was better. I think the film works better without it, but to each their own. Though I despise the "happy ending" idea, the actual scene is just stupid, not bad.
Anybody remember trying to see all the versions back years ago? You couldn't see anything besides the Director's Cut for years. I finally tracked down the original VHS of the International cut, popped it in, and readily said: WTF? Then I saw the broadcast version. Ugh!
The only thing about the Final Cut that bothers me is the new color timing. It works when you watch the film and don't think about it, but as soon as you go back to another version you realize they added way too much blue/green. It cuts down on the original's graininess.
I think I actually like the "father" line better. It gives Roy this odd fascination amidst the anger upon meeting Tyrell, his "maker". I felt it made Roy seem more conflicted and in turn "human"...
I read Dick's novel before seeing the film originally. So I had a pretty good idea of the world/culture that the film was going to explore, and I knew that many things would be different. But I never get the idea that Deckard isn't a replicant. It's so perfectly twisted as a plot element, so devious and catastrophic that it must be true. I wonder what Dick himself would have thought of the idea, because I honestly think it improves on the original film's story to such a degree that the entire meaning changes.
But this is constructed in such a way that there is no definite answer. That's what makes this film live on. Everybody can have their own opinion, their own meaning, and it will mean something totally different to another person than it does to you. It's really like 2001 in that sense.