Nothing is ever cast in stone. I change my mind all the time. I experiment. I try this, that, and then I try that other thing.
Just to say we have been complete, we will explore some things that could be done to make this design a bit more ... interesting. Of course, since your design is your design, you can pick, choose, or turn down anything I suggest.
First we will look at some changes we could make upstairs, then we will move downstairs. Along the way we will see what (if anything) changes on the outside, too.
Of course, I really can't take 4 or 5 variants all the way through to completion (well, I could, but in the interests of time ...), I will choose the design variant I like the best and take it the rest of the way.