All I know is I wish this would have been available while I was younger. The thought of no miserable periods sounds like Nirvana to me. Hope this pans out to be a trouble-free choice for women to make. For those that don’t want to take the risk, fine. For those that do, go for it. I would have, had it been available to me at the time I could have used it.
No drug is trouble-free for everyone. It's likely to be very helpful to some, however.
One of the main problems with all hormonal contraceptives is long-term compromised fertility. That's fine for those who never want to have children, but many are not happy with permanent infertility.