This is already a capability of the player - edit the chords and choose the alterations as you wish (IReal b wondrously covers basically all of them).
Thanks for reply. I know I can edit the chords, what I meant is to have a switch to play alterations automatically - either randomly, or based on some logic. The same way pianists do in a band - they have simple chords in chart, but play alterations, to spice things a little.