In the Voyager book "The Escape" the crew encounter a civilization which traveled in time.Because the writers didn't understand about opening pandora's box.
The temporal guys are foolish to think they can fix what appeared to be a constant meddling with time. They don't even consider maybe the reason they exist is because time has been altered, and by them trying to correct things constantly is why it can never be right. It's quite possible they do these things so in order for them to continue to exist.
I think meddling with time should have some sort of consequence, its something that can't be corrected accurately... maybe 98.9 percent. But the 1 percent of change still remains and this creates anti-time or a stream of flux which can't be fix because they don't know it's even there.
Their punishment for those who made unauthorized time travels and therefore risked to tamper with time was death.