As title says. Just use rendomly generated UUIDs for savegames, name save folders with incrementing numbers (save-1, save-2) or even keep character names butsuffix them with numbers if I want to create yet another character with the same name.

If some would argue to keep and old behaviour consistency, habit and ability to distinguish their characters in save list there are always ways around. E.g. there could be a config option to allow / restrict different names, there could be a warning or even a prompt during character creation like "There is already L6 female mist elven mindcrafter named Moonspell in puppy cave 4 saved on 02.07.2017 14:27:56. Do you want to [I]gnore that Moonspell and create another one, [c]hoose another name, [d]elete and old save and overwrite it or cancel character creation and [r]estore an old game you played with Moonspell?"