Hi, my suggestion is to have a family name per account.
We can create 5 characters per account now which means for all 5 characters, they share the same family name but the first names are different

Example - Family name is Xmas
1) Ashley Xmas
2) Tim Xmas
3) Disney Xmas
4) Markzzz Xmas
5) o3o Xmas

With this, it might help deter scamming, ninjas especially cause now, if ninjas use alts to ninja an item, we will now know who the main character is for that ninja alt.