Lines to select alternative chords, before and after an unsuitable chord

I know that I can select 3 chords, then click on 1 alternative chord, and Scaler will play that alternative, but this workflow is not WYSIWYG (the way I like more) and I forget it every time, at the point I never use it

Now, thinking to my alignment software, where I draw straight lines between the source and target sentences to align, I think this could be an intuitive and practical way to have things done

For example, in the picture below Scaler will play C maj, then D sus2 instead of D min, then E min, with the further option to play that in loop, so I can change the lines ends until I find the right chord

I suspect this is not easy to translate in the software code, but I hope Misters Fantastic (devs) find something similar