Very good idea! I like the plugin just did some changes and fixes to it, if youre interested feel free to put it in next version maybe.
Code cleanup, removed unnecessary variables, renamed the sourcemod ones (time, pos)
Removed Message-Timer completely.
Added Message instead, showing to all Survivor's have a Medkit left.
http://www.youtube.com/watch?v=BjGPOeAFws0
Cheers,
OtterNas3