Too much beyond just the port to WoC.
I will not be listing it out here, play it yourself.

• You will no longer receive the disaster if you Abandon Your Claims.
  
• WIP MTs for governors and released OPMs.
  
• More disaster events, some tied to Legitimacy. As a result, not controlling Herat or Samarkand as a claimant will now have a Legitimacy penalty as well.
  
• You will no longer receive the disaster if you Abandon Your Claims.
  
• You can no longer cheese the entire disaster by making an alliance with some strong power outside.
  
• Interlopers now gain AE from intervening, and are now in an offensive war if they go for End Timur's Legacy instead of a defensive war.
  
• Decisions added so that you can check the tutorial events again if need be.
  
• Attacker now has most peace options disabled during a war related to the Succession Crisis.

• Increased chance of the 'Flight of the Western Emirs' event firing.
  
• You can no longer get the Timurid Succession Crisis disaster during the repeating disaster.
  
• Nerfed Balkh and Isfahan. No more +1 Cavalry Shock!
  
• Added new NIs for Badakhshan and Salor.
  
• You can no longer get the Timurid Succession Crisis disaster during the repeating disaster.
  
• Adjusted starting screens.
  
• Fixed the bug that caused us to prohibit Hormuz from getting the UI faction at all. As such, Hormuz can now see the UI and become an Interloper.
  
• 'Abandon Our Claims' no longer requires less than -75 War Score due to a bug with said trigger.
  
• 'Our Position in the Crisis' now no longer lies about who you'll be swearing fealty to if it was Transoxiana or Khorasan.
  
• You can no longer Persianize or Mongolize mid-repeatable disaster.

Adding tags to the mod and updating the thumbmail to have a higher-res Modathon logo.