To be fair that was because we all thought Heihachi had to be the Tekken rep, and therefore his costume returning meant Tekken was out.
Funnily enough, your focus on Mii Costumes deconfirming made you miss this one, same for the last one too...
Huh, maybe that isn't working out too well and you should try using a different lens?
Though, I'm no better on Kazuya and I'm mad about it too: originally, being back in 2019, I thought Tekken could happen because Heihachi got cut from Smash 4 but I decided to anchor on Lloyd due to that post about Lloyd and Yuri being in development early on and because I held faith in the next Bamco character being a fan pick.
What I unfortunately missed is that much of this pass has been trying to 'right wrongs' if you will, which meant that Tekken had a much better chance, in which case I always said that Kazuya or Jin had a better chance as they have the Devil Gene which gives them more to pull from in addition to also being main characters, with Kazuya being the original main character. I wish I would have stuck with that and realized what I missed, but here we are.
I will say my call now is that that CP11 has actually been leaked already and everyone has written it off for various reasons that aren't truly justified