Hand carved guitar advice. my dad is an accomplished woodcarving and I want him to make a guitar but need advice.

I plan on having the body blank routed for hardware then having him carve something on it. I want something rad but not over the top. Both a wore of art and shredder. I know there are probably very few out there that have something like this. I wonder if there are things you wish it would or wouldn't have. Mainly are there parts of the carving that got in the way or are uncomfortable any advice for the planning stage. Thanks.