Custom Factions- Import Custom Leader Portraits

Dear Whoever Reads This, 

Good Day, 

I would like to suggest the possibility of being able to import a custom image (Whether it be a static or animated image) to use as a leader portrait for a custom race, in a similar manner to how many RPGs allow you to import images to use for your character. 

I feel if this was done, it would be a small change that would allow custom factions to feel a lot more unique as you don't have to use the same portraits as the base game, and it would open up a lot of potential. 

Thank you for reading this, 

Lordoflinks