1) I do enjoy freedom when designing a tattoo, but I have learned over the years to pry into the clients thoughts as deep as possible before putting pencil to paper. It's easy to spot a client who is willing to give me total freedom, but if I see an ounce of "control freak" in a client I spend the time consulting their ideas until I feel like we are on the same page.(even a walk-in)
2) I would redraw a design as many times as took to please the client. I have had many clients that simply wasn't happy until the design looks like a they drew it them self in 8th grade. Once it reaches this point I respectfully decline to do the tattoo.
I will add this. My rule is, I will do anything to please the client, but I draw the line when I have to send something out the door I'm not proud of.