I've grown too accustomed to text boxes to want voice acting in the Pokemon games. It would be nice, but it wouldn't really fit well within the games. I personally think they would fit better in most of the spin off games, we already have voice acting in the arena battling games and it's been fantastic (shoutout to stadium/stadium 2 announcer). By spin off, I mainly mean the Mystery Dungeon games. They're all about story, partners and enemies, etc. I'd really like to have voice acting in those games, maybe like the Mystery Dungeon specials they have on the anime occasionally, but in the main series games? Stick to text boxes. :p
I don't really like the idea, but if it were to happen, just make it an optional choice in the options or something. d: