Manic's Expanded Factions should be compatible with any and all mods that do not edit the startpos.esf file. If you have access to Pack File Manager[sourceforge.net] (or any other program capable of editing/viewing pack files) and know where mods from the Steam Workshop are stored on your computer ('Program Files (x86)\Steam\steamapps\workshop' by default), then accessing a mod's files to find out should be relatively straightforward.

Here are a list of, and links to, other mods on the Steam Workshop that (according to subscribers) can be enabled alongside Manic's Expanded Factions without causing any noticeable issues, game-breaking bugs or crashing. Please don't hesitate to inform me if any of the mods on this list are no longer compatible.

• Better Campaign Camera
  
• Unlimited governors
  
• Shields Down While Marching
  
• Colourful Shields
  
• Better Camera Mod
  
• Colourful Buttons
  
• Owen's Vibrant Faction Flags

Are you using a mod with Manic's Expanded Factions that's not on this list? Please leave a comment so I can update it. Just make 100% sure that it works without issue before posting!

Common issues that can be symptoms of a mod conflict include...

• All or some unlocked factions not showing on the faction selection menu. This can also be caused by enabling more than one pack of this mod at a time.
  
• All technologies trees are unlocked on turn 1 or technologies not unlocking despite prerequisites being met.
  
• Units not upgrading or new units not unlocking in the recruitment pool despite prerequisites being met.
  
• North Korean diplomacy, such as finding yourself inexplicably at war with a vassal/your overlord during the end turn phase without any notification of a war declaration.