Hi @fpedroletti !
Not to take away from your feature request, but having had the same desire I found a couple of complementary tools to help create random melodies. RandArp (free) works pretty well. Then I use Cthulhu from Xfer, BlueArp, Phrasebox and Xyntheszr (iOS Midi app). Plus, some DAWs like Bitwig offer virtual devices that help with aleatoric composition (my focus in making music).
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