Why do you need teamspeak for a tournament?
Besides, Discord is much more easier to set up and get into anyway.
It was going to be / supposed to be a professional type tournament like you see on esports. But i guess blockland isn't really that type of game. Also, i prefer teamspeak over discord anytime, my stuff computer used to run very smoothly with teamspeak and still does. When i played heavy used cpu games, it wouldn't matter. Now that i use discord, my cpu sky rockets and my computer almost overheated like 5 times already. I don't see what's so hard about teamspeak, you put the ip in the connection box and thats it. Also, discord is basically a chatroom and noone really uses the voice room (at least the server i go on). But this is my opinion, and i see some good things come out of discord like badspot! :o