In a real design firm. You have
1. The Top Dog ... lead designer. He probably has an extensive portfolio and has years of experience.( he doesn't even know how to use photoshop ) HE IS A DESIGNER ...
2. The graphic artists. Making the lead designers vision come to life. They probably have years of experience and a degree that specializes in a specific aspect of the design industry.
3. There is always a window of time to make changes.
Nobody does jack swiss shit without it being signed off in writing. You are also usually not talking about $20 dollar logos ...
Then you have freelance designers ... if you don't have a portfolio to backup your skills... you probably aren't signing contracts and your working for guys like the OP that think your shit anyway...
If you are worth two shits and have a strong portfolio all this crap is agreed to upfront and is a NON ISSUE ( your probably getting $$$ too )...
then you have adult...
so the moral of this story is ... specialize in being a designer for the adult industry. You will become $$$ and famous !