Nice, but IMO it falls, as the Bullet Journal, into the category of beauty over result. I just think that simpler, less structured systems provide comparable results in terms of getting things done, while wasting less effort on the nonessential aspect of system.
As for alternatives, my favourite is t (http://stevelosh.com/projects/t/). Truth be told, it may be way too simple. But yet again, complexity needs to be justified.
As a side note, remember that you can do for organizing tasks an argument similar to xkcd's on automation: