good idea?

[yall]

hello, i just had an idea which i think has never been done too much on a vst.
we all know that not all vst users are musician.
my idea would be to redo as done the komplete kontrol from native instrument. basically,
if I want to make an Am chord, the keyboard only works on the keys corresponding to this chord.
Am = A C E ...
CM = C E G

do you want the thing? that might be helpful.
I would see a drop-down list that would allow the user to choose their agreement, write the agreement then change via the drop-down list to a new agreement.
I think it is possible by mutating all the notes which do not correspond to the chosen chord but how to make this possible from a list?
here it was my idea of ​​the day.

[Lindon]

@yall you've seen these yes?

https://www.pluginboutique.com/meta_product/3-Studio-Tools/93-Music-Theory-Tools/6414-Plugin-Boutique-Scaler-2

https://www.adsrsounds.com/product/software/xfer-records-cthulhu/?gclid=CjwKCAjwyo36BRAXEiwA24CwGR5o3HXuiHM_uWCqxN5qZwPDazUwfEjbir7uoFPvdsYvZf1b08XMghoC93oQAvD_BwE

[yall]

@Lindon
I gave them the idea ^^ I think it would be a nice thing to do anyway