It might take a while, and honestly this should not be committed until the far future after realease but
Creating an online game section where players can customize their entire character based on selective base customizations or all whatever you wanna do could really really really good for the games long term player count.
tl:dr Gta Online but instead
Ananta Online with customizeable map modes and customizations on top of a lot of other things that are too many to count
#Online Game mode
sharp dagger
uncut garden
maybe even the chance to meet the main characters of the game with your own character could be nice