That's because the series will be primarily a dramatic one. Not a comedy. Also, there will be depth added to the one-dimensional lawyer Saul Goodman. That's what the actor playing Goodman Bob Odenkirk told Sarah Gray in an interview with Salon. Here you can read that.
With superior writing and acting, the character Saul Goodman could become as complex and surprising as that of Walter White. And the scenes could be as visually shocking. One of the most vivid to both us viewers and to White himself was the "Humiliation in the Desert" by Gus. In his strategic planning to get even with Gus, White kept replaying that ordeal.
The Goodman character can take us over but doesn't have to be sympathetic. The last television anti-hero we had empathy with had been Tony Soprano. After all, what a mother he had. We felt nothing for White, nor for his wife.
The spin-off begins early in 2015.