I was just perusing the custom decors and thought, damn, why isn't there a way to search decors by creator? Perhaps you'd like to check if your favorite artist has put out any new decors or you'd just like to see if a certain player has created any decors? Boom, enter their ID into a little search box and it pulls up all of the custom decors that the user has created.
Not sure any better way to explain it as it is pretty self explanatory. Placement wise, the custom decors page under Filter Decorations there could be a little search box for ID?

But yeah, that's my suggestion. Please let me know why if you no support!