While they can't offiically support it due to legal reasons, you guys are defiantly making them notice it I think... Not sure if you guys saw over in the PI forums, but Doomdark just posted this
Hey folks, just thought I'd post about some stuff in the v1.06 patch that could affect the work of modders.
•The religion group tag "muslim" now specifically controls most new Muslim-specific features. That means you cannot turn on the Decadence system for anyone else, etc. We had to do it this way for Multiplayer reasons.
•You can no longer make Muslims playable just by changing a line in the religion file.
•I've added a flag to scripted dynasties: "divine_blood = yes". This will disable the incest restrictions for the dynasty and make members actually prefer inbreeding, though at a high risk of giving the "lunatic" trait to offspring. This should help a certain mod based on a popular series of novels.
Naturally bolded the main point that should concern you as that should make things mighty interesting now .
So defiantly can't wait for a future version soon enough.