This add-on allows you to rotate & slide an edge loop along the normal edges without distorting the shape.

Features:

- Sliding an edge loop 

- Rotating an edge loop

- Custom noise offset of the edge loop

Works with 3.0 Blender Versions.

You can also slide & rotate an already rotated edge loop.

Randomized noise offset with different noise types is now also supported:

- Non-planar edge loops are not yet supported but there is an experimental option "Non-Flat Offset" that can sometimes work well.

- Right you can modify one edge loop at the time. I'm planning on adding multiple edge loop modification soon.