Accessing proportional editing selection weights

Hello,

I would like to make a suggestion for an extension of the Python API, namely the possibility to access the “weights” (amount of selectedness) of mesh elements for a certain setting of proportional editing, allowing interactive tools that work proportionally on the mesh. I for one could use it to extend my FastScale addon.
What do you all think?

I think that’s great. We can repeat then in Blender: