I think the real question here is...
Did you watch the theatrical release or the director's cut? If you saw the theatrical release, I recommend giving the movie another watch through, but this time with the director's cut!
But I digress, it is easily one of my favorite movies and I love watching it. The genre of cyber punk was really hard hitting and I wish a lot more dealt with it. The 80's was a golden era in Sci-Fi in that regards with a lot of unknowns about how our future would develop and the consequences of our massive technological increases and globalizations of corporations. RoboCop also deals with the issue of corporations having a stronger pull than the government (a classic cyber punk theme) and how that effects everyday life.
I think the closest I can think of for serious sci-fi in recent years (and good) was Moon. http://www.imdb.com/title/tt1182345/ (http://www.imdb.com/title/tt1182345/) Which I recommend, especially if you enjoyed Blade Runner.
ALSO: super serious spoilers ahead, do not read if you have not watched!
What do you guys think of the theory that Deckard is a replicant? I think it's plausible, as what else could hunt replicants designed for offworld harvesting/combat? And I believe Ridley Scott has gone on record to say that Deckard is a replicant (though I think I remember Harrison Ford thinking otherwise...). I think it gives a new interesting perspective on the story and creates a whole new level of intrigue. Are all the Blade Runners replicants? How many are hidden in society with no one even knowing? Is this something funded by the government or just the Tyrell corporation? Does the government know? Oh the possibilities are endless!