If the tourneys go over a couple of days,then yes you require an email...The whole point of the tourney mod is to get a tournament over and done with as quickly as possible..Not to have it dwelling..We've seen it in other arcades and it fails,why have this do the same..
I suppose I will put in a reminder email, which you can set to go off x hours before your match runs out - but i still like using notifications as the primary method