Maybe make it into sections, so you have 2-3 'rings' of bricks and adjust the number of bricks with each ring, so the inner ring will have less. Then you will avoid too much distortion.
It depends on what type of bricks/pavers you use. If you use square bricks you get a big gap at the outer ring and they touch at the inner part. If he's willing to warp bricks with polar coordinates then I don't think wedge shaped bricks are all that bad... Cut to fit or custom brick shapes are pretty common and in a lot…