1.) Which member was your favorite?
Big surprise, Konan xD
I love her design, her creative techniques/ jutsu-style and she belongs to the Ame-orphans, who have by far the best story of the whole manga, if you ask me.
2.) Which member did you like the least?
Hm, I think Zetsu. Never liked this plant, especially after the big reveal of his origin.
3.) Who had the best jutsus?
Konan, as mentioned earlier

But besides her, I would choose "Tobi". Kamui is pretty cool.
4.) Which member looked the best in the Akatsuki robe?
They all looked incredibly good.
I'd say Konan, Hidan, Itachi, Pain and even Kakuzu.
5.) Who had the most interesting backstory?
The Ame-orphans! But besides them, I'd choose Itachi.
The reasons are obvious.
6.) Who was the most intimidating?
Kakuzu. This guy looks sooo evil and creepy like an undead.
Kisame and Pain come close after him.
7.) Which character should have had more screentime?
All of them, except the Ame-orphans (which were already highlighted perfectly) and Itachi (who even gets an own anime this year). I really wanted to know more about Hidan, Kakuzu, Kisame and also Deidara and Sasori.
8.) Which two-person team was your favorite?
Nagato/Pain and Konan, as well as Hidan/Kakuzu. They share the first place

The first case should be clear by now.. but Hidan and Kakuzu were so fascinating because they were so different, unique and similar at the same time. Both of them were "immortal" and did what they did for fun. But their personalities couldn't be more different.
9.) Who had the best dialogue/most memorable lines?
Nagato:
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"Those who do not understand true pain can never understand true peace."
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Sometimes you must hurt in order to know, fall in order to grow, lose in order to gain because life's greatest lessons are learned through pain.
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Religion, ideology, resources, land, spite, love or just because. No matter how pathetic the reason, it's enough to start a war.
Konan:
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"One question, Madara. Do you understand why we betrayed you? Because you are darkness! a world without light where flowers can only wither and die!"
Kisame:
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*last words* "Itachi-san... It seems that in the end... I'm not so terrible after all."
Itachi:
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"I always lied to you telling you to forgive me. I used these hands to keep you at distance... I did not want you to get involved. But now... I think you could have changed father and mother. Perhaps even the entire Uchiha. If I would have stood in front of you and looked you in the eyes from the very beginning... talked to you instead of down to you... and been open about everything. But I failed, and speaking to you now, like this, isn't going to undo the permanent damage that's already been done to you. That's why I wanted to show you the truth. Even if it's just a little. And no matter what you decide to do from here on out, you never have to forgive me - I will always love you."
10.) Who had the best death?
- Itachi (both ones)
- Kisame (he finished his job and died a true villain)
- Nagato (he remembered his own words and found his light again, bringing Kakashi [
and the rest of Konoha] back to life)