That's because pretty much every MMO out there charging a monthly fee isn't worth it. Subscriptions have to go, and if Champions launches using a subscription model, they'll just be stuck with low numbers in a few months (after that huge launch wave) and then will be wondering what went wrong.

Gotta stop with the subscriptions, it's just a dead/dying business model for gaming.

Battlefront Heroes launched, F2P game with RMT/microtransactions, over a million users now. It's the way to go. Sell box copies even, but don't try to charge a subscription fee, it's the path to failure.