Do aberrant dragonmarks impact the Prophecy?

Hi! I'm finishing up a Witchlight campaign soon and I'm looking for a more gritty, grounded setting for my next one, hence Eberron. I'm really intrigued in particular by Kkressd d'Orien's motivations (y'know, the rakshasa courting Jorlanna d'Cannith in order to create a schism in House Cannith) and it got me thinking - if the Korth Edicts are abolished and aberrant dragonmarks become more and more apparent, what impact would that have on the Draconic Prophecy?
Is there precedent for this, or have you done something similar in your own campaigns?