Kitty:
No problem, this will be our own story after all. We can make our characters have any personality we want.

LimeyPanda:
Nice to see a lurker, that means we're doing something right. :)
Feel free to chime in when we discuss something, perhaps a fresh pair of eyes can see something we can't.

Masaki Haruna:
Well, this puts us in an awkward situation. 
On one hand it's great to have you here, enthusiastic players like yourself often bring good ideas and gameplay.
On the other hand the story pretty much limits us to three players, and there are three of us already. I guess we could open up the fourth spot (Jounin trainer), but that player would have to live with periods of inactivity. 
If you don't know yet we were planning on going through the canon story from the series, and there are quite a few episodes where the team is separated from Kakashi.

MMGiru:
My reply to you is basically the same I gave Masaki. Because we want to do the main story there is a natural limit to the number of players. A second team wouldn't really work because we don't know what any other team is up to consistently through the series. 

Sorry it has taken so long for me to reply, I got stuck in Dark Souls and couldn't put the controller down :P