Teddy and Yosuke are also getting new voice actors.
Par of the course for Atlus and Persona remakes, I guess. They seem to cheap out on the voices. P3 Reload was the same. But I dislike it, some new voice performances just don't hit nearly the same, like with Mitsuru.
Teddy and Yosuke also feel major because they have quite colorful characters and the new voice actors sound stiff.
Kanji will also be hard to match as well as he has a lot of energy in the original.
Chie on the other hand, the new v.a. sounds a lot like the old one, going by the trailer. There were times I thought it was the same voice actress.