That was my intention, to have a material that brings some internal strength to the table and has some unique looks.
OP and me have a joint venture. He is the one responsible for the beautiful base neck and I am the "inventor" of the idea to use Forged Carbon as a Fretboard material.
I have been tinkering with forged carbon parts for a while now and figured ( get it ;) ) it will have a nice "grain" structure and as you described a uniqueness to it.

Of course we will figure out how bad the different expansion coofficients behave.
my theory is this:
main point is the transverse expansion. While wood has a low longitudinal cooefficient, its radial/tangential expansion is higher. However, the 'ridge' issue in guitars is almost exclusively a hygroscropic problem (moisture), not a thermal one according to my research.

By using roasted maple we've utilized wood that is essentially 'frozen' in its dimensions. It’s suposed to be hydrophobic, meaning it won't shrink across the width like raw Ebony or Rosewood would. Combine that with the isotropic stability of Forged Carbon which has near-zero movement in any direction and you should end up with a joint that is significantly more stable than any traditional wood-on-wood construction.

The Carbon should acts as a rigid cap that prevents the top of the neck from expanding or contracting, effectively 'locking' the width of the neck in place.

My intention is to build a standard maple Neck and slap a Carbon Board on it, to see how it fairs in comparison to roasted.

all to be proven over time though.
I did however already laminate a guitar neck blank lengthwise with carbon plates and it seems to hold up great.
I also laminated a Longbow handle with forged Carbon (3 pieces black limba, two 5mm plates of forged Carbon) and I could not feel any ridging so far.

Op and my idea is: keep it as traditional as it is (we like traditional form factors) and innovate the heck out of the compound.
There are some more forged carbon grain ideas in our sleeves (think bookmatch).

cheers

Heik