People of ModdingWay made the first mod in FIFA 17. This is the first mod that don't use RAM tweaking to insert files into the game, as you know, I did this before with scoreboards.
Playing with database and using a complex proccess with hexadecimal tools they were able to add Robinho to Atlético Mineiro, with his real face.
I hope this is a start to FIFA 17 mods and I believe we will be able to mod FIFA 17 soon, once the proccess to insert the head file should be the guide to other types of files.
You can check this at ModdinWay.