Had Escape From L.A. not been such an unintentional comedy then perhaps the original third planned film Escape From Earth could have been made. Maybe then this is what they have in mind. Escape From New York, how the hell do you remake it to feel like that then make a trilogy? Gritty realism, or don't even bother.
I'm a fan, but not particularly excited without John Carpenter or Kurt Russell. Liam Neeson? No, someone younger. It's an interesting setting, but that's not enough to hold up a trilogy, they'll need something more than "cool guy with eye patch escapes location". This isn't some guaranteed awesome that makes itself.
Seriously. Neeson is only 1 year younger than Kurt Russell. What's the point of recasting if they're going for that age?
Joel Silver also compared it to Batman: Arkham City? http://www.ign.com/articles/2014/02/10/joel-silver-compares-escape-from-ny-remake-to-arkham-city It is interesting for a non-video game movie to take inspiration from a game.