It would be cool to add a command that could "unwrap" a cube,
It would unwrap it by putting a portal on the edge that changes gravity that then leads to another edge, this will make it feel like the cube is flattened.

The commands syntax could be like this "/portal unwrapcube x1 y1 z1 x2 y2 z2 height"

The height would be the height of each portal that is made.

It's being considered.

The feature has been added, will be in 2.2.0

Thank you!