Great idea! It is definitely possible to either have a filterscript or an IRC bot which logs in team kills. Technically, it would check each kill that occurred on the server, and see whether the tag in front of the killer and the victim is the same- if so, flag it as team kill. Obviously different teams would need different tags. We could have it to check different skins as well, it's really up to you.
If you are willing to organize the event, we could make it official. You in?
If you are willing to organize the event, we could make it official. You in?