Yeah, the idea of Grievous collecting sabers off killed Jedi is being removed. Originally I loved that idea. It added some depth to Grievous's background. But as it's never really shown after the removal of the death of Shaak Ti, it's not needed.
I'm finding that with the character of Grievous (like most villains) less is far more. He's becoming more creepy by the minute.
I also feel the gains of the red saber visuals far outweighs the one line delivered by Grievous earlier in the film, which I planned on removing anyways.
Side note to sans_fi:
I've been doing alot of Clone Wars watching indeed. Only problem I'm having is deciding what lines to use. Cause there's alot of good stuff.