I believe that dead players should still be able to communicate once they are dead on the server. There is really no known reason why this shouldn't be as it does not provide any advantages or possibilities for ghosting. Like the TTT server, it is clearly more enjoyable to be able to talk to others, when dead, to prevent boredom waiting for a round to finish. Personally, I hate typing in chat to talk to everyone when I'm waiting for a new round to start, and i'm sure that I am not the only one that agrees. Speak up people, literally.