Thanks for the update, I guess at least the addition won't hurt either.
This plugin should really be installed by everyone running an L4D1 server to get rid of those annoying guys who destroy games by kicking through exploits one by one and to frustrate these guys instead of the players.
In L4D2 that rejoin exploit was already fixed, but i guess, Valve will never fix it in L4D1:
https://www.youtube.com/watch?v=2oM3i7tOMzg
This exploit was the reason I installed your wonderful VoteKick plugin.