Logic and Studio One and probably other DAWs already operate like that and I think it’s a quicker way to get the fades you want fast without opening the fade editor.
Instead of dragging a fade, double clicking it to open the fade editor, adjusting the fade and clicking OK, why not let us drag that fade directly with the mouse?
PT with its 12.6 update seems to have seen the light and adapted the way they do fades. It’s much faster.
I think it’s way faster and you would not even need the fade tool at all, saving another dialog and many clicks. The Fade Editor is more powerful of course but it seems overpowered. Do many people need to draw their own fades with nodes? Why not use volume automation for that? I don’t know if this complexity is needed. 99.9999% of the time I either use linear fades or click one of the logarithmic ones at the bottom of the dialog. By directly dragging the fade with the mouse I would not even need to open the editor at all.