sytus
[14] Master
No matter how many times you say they cut certain character because they were clones it won't change the fact that Tekken 7 still has 4 Mishimas, 5 if you count Kuma, 6 if you count Kazumi and while I do not believe those are clones I have to call them clones if Anna is to be called a Nina clone outside of the first three games.
Popularity will no doubt be primary factor, uniqueness secondary. You have no idea just how popular Heihachi, Kazuya, Jin and Devil Jin are, even Kazumi has been stirring talks in the community that she should carry over to the next game.