Most people already do this anyway, but I just want it to be a compulsory thing. Because when people change their names, I have no idea who anyone is, and I normally refer to the name changing thread when I want to know who is who.
When people don't post there and change their name, it takes me a while to figure out who the person is. This is especially annoying if I don't know what their profile normally looks like.
Or a compromise, Pokemaster or one of the mods or whatever can make a post showing all the users' previous names and their new names with the '??? --> ???' format. Also, if this suggestion ends up happening and is instead worked with some coding magic (so it happens automatically) this can detect users who are repeatedly changing their names.
Just do somethiiiing. :c