For me there seems to be an opportunity to replace some of the slightly silly looking non-speaking Jedi council members with actors which could build a bit more character by actually saying something.

So we get a sense of losing something when they killed or in peril.

Also the Separatists seem to be all aliens and hardly any of them actually say much or show signs of contributing anything to the cause other than agreeing with Dooku or Grievous.

It would be interesting to have a bit of disagreement in there especially when Grievous is planing to move everyone to the 'mysteriously safe because of the volcanoes world'.

The deleted scene where Shaak Ti is killed by Grievous might be adjusted so that one of the Separatists questions the wisdom of sending them all to the same place only to get killed for stepping out of line (shades of Vader there).

To get around the often dodgy looking CGI that character could be a human actor.