I agree, this last episode left many questions unanswered, but at least it finally vindicated Mr. Bennet. It's been such a pain trying to figure out what side he's on.
Still, despite not having the most important questions as to who exactly runs this human policing company and whatnot being answered, I think this last episode was brilliantly written. It answered just enough to satisfy the endless yearning; still, it left enough open to keep you coming back for more. I'm certain that if all the questions were answered, many would not tune in for future installments.
About the only disappointment for me, personally, was there was no true Hiro action. Sure, there was him as a small boy, but that's not as much fun. Oh well, I shall eagerly wait for next week so that I can get my dose of Hiro-ness.
Jam it back in, in the dark.