Thanks for the insights Charlie, much appreciated!
I couldn’t find a way to add nodes and then removing a specific segment of a shape directly in PixelCNC, so I ended up doing that part in Affinity Designer and then re-importing the vectors. I’d love to learn the pixelCNC native method how for next time.
The result:

Also, having more control over tab placement would be extremely helpful. I’m the guy who moved from Carveco to PixelCNC a while back (we’ve exchanged a few emails), and I wanted to share this use case with you. An offset parameter would help a lot but precise tab control would really make a difference. If you jump to 4:53 in the video, you’ll see what I mean. This kind of control would be especially useful in situations like the above (being able to keep all in 1 path), or the skull/snake tutorial, where parts such as the tail are quite fragile.
Thanks again for taking the time!