Student or Learner
1. Does this "more of" denote that "more on this part than that"? Can't you just use "more"?
2. What does "pace" here mean? "speed of change"?
7)M:It's a romantic comedy. I play the lead male role. It's going to be more of an adult part than I've played in the past
W: How exciting! That should be a real change of pace for you.
More of is correct.
Change of pace is a figure of speech. Pace is how fast you are walking. By analogy any change from what you normally do can be said to be a change of pace.