I myself would like to see that every network follows DALnets lead by doing this. This would not only free up some space on the network by not cluttering it up with channels that are filesharing. (look at the channel lists for crying out loud, almost 1/3 of it roughly is fileshare) but this would also show who are the real chatters are. But also I think that all bots should be banned as well. Why have a bot if you have a channel service? Its just not necessary. (I've seen so many paranoid people out there afraid their channel is gonna be taken away if it doesn't have a bot in it.) I understand its a question of choice.
Course, these are just my own opinions. The only way I see having a bot necessary is if the channel services are down. To make a long post short, I hope that all networks follow this lead...whether it works or not is up to the users.