Realizing skin thickness gradation along span

[sdeinert]

In case one wants to have a step wise reduction in skin thickness from wing root to tip, the obvious way would be to use a number of different cells along the span direction to set different values for thickness.

However, if at the same time a continuous stringer set shall be defined for the wing box between root and tip, this would require one large cell spanning from root to tip and from e.g. front spar to rear spar.

This would mean that the stringer cell would overlap with the group of thickness cells. The problem here is, that the cell has for example a required material definition. This means skin material would need to be defined in the stringer cell as well as in the group of thickness cells. Due to the overlap of cells, this could lead to inconsistent settings regarding skin material or even thickness.
Is this usage intended for cells, or is there another way to solve this?

An additional point would be to allow such thickness gradation also for internal structural components such as spars or ribs, which is currently not possible, as no cells exist in these components.
Would this speak for some new definition allowing thickness gradation outside of the cell to allow re-usage within spars and ribs?