Ability to define custom polygons for MapShape

[aamikus]

Is your feature request related to a problem? Please describe. Our use-case requires rendering a map on a custom polygon. In our case it is a shape consisting of a hexagon and its nearest hexagonal neighbors, for a total of 7 hexagons.

Describe the solution you'd like It would be great to be able to define a custom polygon MapShape, instead of choosing from a predefined set of either a cube or a cylinder.

Additional context I am unfamiliar with Unity, I am just investigating the viability of this library from a business perspective. So i'm wondering whether there are any technical limitations to blame for this not being available? Would it maybe be possible to implement it with the existing API?