There's a valid reason for the lack of voice chat. The matches only last 3 minutes, and that's obviously not long enough to establish proper planning via voice chat, and that the directer opted to go without it due to past experiences with voice chat. You can't blame him, and this will be a kid friendly game, and the last thing their parents would want for them from this game are strangers cursing at them for screwing up in a friendly game. There is a a lack of content, but they will be added. If you had watched the Nintendo Direct earlier this month, they explained near the end that by August, there will be an option for you and your friends to play together, since that has been one of the things that worried people from the start.