First of all, my English is bad so bare with me..
Since rings are never going to be added to this server and ring slots will forever be empty, why not have custom rings with 0 stats that cannot be unequipped, traded or dropped. these rings are labeled after each restriction. Give these rings to characters with restriction.
example: Characters with the "0.5x exp restriction" get a ring labeled "0.5x exp"
example: Characters with the "Ironman restriction" get a ring labeled "Ironman"
this will help us distinguish characters with restrictions within the game instead of going to the rankings on the website.
Pretty sure this will never happen, but its just something i thought would be cool to have. 🙂