I've read the various case studies here - lots of smart people doing great work scaling massive FB campaigns.
One question I always tend to land on though - isn't a lot of this stuff considered repetitive when the conversion pixel is going to do the same thing?
What is the point of creating 100 different audiences + ad groups etc. if the pixel just will do the same thing - and you don't have to do the work?
Does the pixel "cost more" to use? I could see FB considering conversion targeting campaign use a premium "convenience fee".
Why do you rockstars go out and manually make everything instead of just letting the FB conversion pixel do its thing?