Assassin's Creed questions (and lil info tidbits)

[Kibo]

So i just completed the game. I've killed the master, seen the creepy blood writings, read the emails, etc etc. But the Animus won't let me back in. Am I allowed to collect the rest of the flags and view points and such or no?

Also: A couple tidbits:
The producer decided to have the art team draw 300 different characters because she didnt want players to get bored of the crowd.

Altair means flying eagle in arabic

Altair's is modeled after a spanish model lol

Lucy, a fellow assassin, is voiced and modeled after Kirsten Bell (From Veronica Mars and Forgetting Sarah Marshall)

AC2 will be released in March 2010 supposedly.
-Will have a New character in Italy named Ezio
-May include swimming and gun powder?

Hopefully all this extra info will work as payment so youll answer my question =]

 

[Toasteddude]

I believe you are. I also think, at least if you replay the game, you can kill civilians without punishment.

 

[Kibo]

Alrighty...but how?

 

[Toasteddude]

Not sure, I have 2 people left to assassinate and not enough will to do it