During off peak hours there are 2 or 3 digit queues, so there isn't a massive amount of people using exploits to stay logged in 24/7. A reset in the middle of the night would boot those people who went to bed expecting to still be on when they got up in the morning, but it's not gonna make much difference during peak hours.

I'm not against it if the time off is minimal and the in game warning is sufficient.