Will the AC 2 have memory blocks because i hated how in the first game when you play a previous mission you didnt have all the unlocked weopens you just worked your butt off for.

Well there is still an Animus so there would still be memory blocks I think.
But now we might get a memory block at the end where we still have all of our equipment and stuff. Sorta like a Free roam/Free to play memory block. Just a theory I came up with.

i want the game to be like the grand theft auto ending where you can just run around killing people, going on rampages

Oh, you can...

This post by Cornik22 pretty much confirms that the memory walls will be also on ACII, in case somebody hadn't yet noticed that...

the memory wall's are only a problem at the start of the game. if there was a free roam at the end the walls would be removed.

also the dev's have said the memory walls in this game work differently you can go through them but if you stay on the other side too long you loose sync.

There better be a free roam type thing at the end so that you can go out with all your stuff so u dont have to chose a specific memory block