I would put all my money on using the original Japanese voices and subbing it. It costs a lot of money to do a dub and Sega does not get a lot of return on investment with the Yakuza series. That’s why all of them since Yakuza 2 have had only Japanese voices.

Not to mention it’s more immersive and authentic and the Japanese voice actors do an amazing job! (Personally I don’t want a dub.)