The original film (which I just re-watched a couple days ago) is a deserving classic for a lot of reasons, but it's also not beyond criticism so it's totally possible that 2049 could be every bit the equal of the original if not better.
Anyone else seen the prequel shorts for the new movie? I watched them all and they're worth a look I think. The Dave Bautista one was nothing special, but I liked the Jared Leto one, and the anime one was pretty awesome. Directed by Shinichiro Watanabe (who did Cowboy Bebop among a bunch of other great stuff), and he got a top shelf crew of animators to work with. It amuses me that making an anime of Blade Runner makes it REALLY obvious that Ghost In The Shell is basically just Blade Runner.
Hey, they're all on youtube go watch 'em.