Support. Not only is it nicer for people that aren't in the arena, but the people that are playing in the /ma j can see when someone needs healing without scanning the chat 24/7... It could save a lot of Minecraft lives :P
Support! If you support this thread you may also support this thread: http://www.mineverse.com/threads/mobarena-start-delay-timer.112478/
There is already a suggestion thread about this. Please feel free to check it out and leave your opinions. Closing.