I'm currently in the process of revamping my entire portfolio due to moving studios. Below are a few examples of bands that I have previously worked with in both my old and new studio.
I always allow bands I work with to have an input on the entire process. As long as I audibly create what they envision then my job is complete. If the project has more corporate responsibility (record labels, publishers etc) I will be stricter on what I will revise in the mix.