Password restricted voice channels

Well, my suggestion is that voice channels can have a password. This would benefit discord by not having to give roles to add someone into a voice chat. There are many servers going to discord from teamspeak3, so adding that feature would be really good in my opinion. Basically when you click on the voice channel, you will have to type the password. Reason behind why are people moving from teamspeak3 to discord is simple, teamspeak3 can get ddosed very easily while discord cannot.