Hi @DeadZombie
If you want
then you will have to use a second instance of Scaler for the arpeggios.
I don’t think there is a function within Scaler to do this.: the best way to choose alternative chords is with your ears. I would suggest you try using the features on the CHORD page to experiment with sus chord, inversions and chord extensions (see # Introduction to the CHORD page and Introduction to CHORD Variations
Finally you ask
I would suggest that you should consider music theory as a guide rather than a set of absolute rules. The great composers (Bach, Mozart, Beethoven, etc.) all “broke the rules” at some time when composing. If it sounds right to you, then it is correct.