What if someone forgets to clearly state that its a league game? Or maybe the loser of the match will deny it ever being an official clanwars match.
there shouldnt be any "what if's" in an OFFICIAL league game.
personally i dont think it is that official, if people do start whinging about "oh this wasnt a league match".
i do agree with si1foo on this, the name of the game could also be changed to a common league name, with passwords.
In order to participate in the clanwars league you need to be in a clan anyway, why wouldnt you wear the tag.
my name is too long >.<
if a bot could be made for your league, i think it would sort most of your problems out.
anyway, i am all for a demigod league, it is a great idea.