The difference between this show and all the others that had no plan is that *this* one implied it did. That makes it disingenuous at best, and at worse disrespectful towards it's audience. The comparison to 'Lost' is fairly apt since they both suffer from an over dependence on the "mystery box" model of storytelling. Which is all very interesting and intriguing until you open it and find it's empty.
When any author writes a mystery or intrigue story, there's an implied trust that they know where this is going, that everything will make sense in the end and the pay-off will be worth it. When that trust is abused, it can retroactively tarnish the whole experience.
The net result is that that when one watches it a second time, one can't help but notice every dead-end plot that is set up like it means something but doesn't, every shock turn done just for the sake of being a shock turn. It's an empty, hollow experience, made all the worse by the fact that just about every other element of the show is excellent.