yugutou It is true that the presence or absence of edges will affect the result when you perform weight smoothing, but if your meshes have a large number of vertices, wouldn't it be more accurate and faster to use the brush mode of the weight tool, such as Add or Remove, to adjust the weights?
You may also want to consider changing your weighting workflow. If you first add vertices on the mesh hull to trace the outline of the image without adding the inner vertices, then bind the bones, let Spine calculate the weights for the existing vertices, and then add the inner vertices, you should be able to add vertices whose weights are automatically calculated based on the distance of the vertices to their neighbors.
This is just my opinion, but instead of adding the feature to convert all dashed gray lines to edges, it makes more sense to add a smoothing option to allow weight smoothing that also considers unconnected vertices. Because I think if I wanted to add, modify or remove some vertices after converting all dashed lines to edges, the edges might be obstructed.
