Multi-layer coils + buried vias

[globalcitizen]

It would be useful to be able to generate a multi-layer (eg. 4 layer) coil.

With regards to any future addition of that feature, in constrained spaces the nature of the vias is important. For example, are all vias thru-hole vias (as present) or is there support for buried vias (saves a truly significant amount of space in constrained deployment).