Been running client reviews for creative work for a while now. Here's what I've noticed actually eats the time, and it's rarely the creative itself:
Feedback without a pointer gets rebuilt from scratch. "Make it pop" means nothing without someone marking the exact spot. Every vague note costs a full round trip.
Version mix-ups cost more than bad feedback does. Someone comments on V2 after V3 is already out. Now you're reconciling notes across files instead of just fixing the work.
Proofrr
Proofrr
Feel free to comment and DM me on LinkedIN if you have any doubts/queries. Would love to hear your thoughts.