Well, while I like the modding of the textures to fit the other Clouds... but I really think if someone's gonna do a Zack that more needs to be put in there than just a simple texture edit. It looks pretty good, yes, but it looks like someone dipped Cloud's hair in a vat of black dye and left it at that.
Good texture editing, but I'm hoping after Cloud's done the guys who made the vertex edits will change it up a bit to get an actual Zack. Though I don't think the missing shoulder pad can be added currently (I think Ike's only got one pad to mess with), if Cloud's hair is doable, I'm sure Zack's is too.
And no, Cloud hasn't been in any Wii games... but if DAE to MDL0 conversion gets completed, then that won't be an issue thanks to something I saw that deals with ripping models from PSP games and converting to DAE. Keep up the good work, everyone, can't wait to see the finished moveset in action!