Can we integrate a payment gateway of our choice for subscriptions?

The payment gateway only makes out a tiny portion of a multi-platform authentication and subscriber processing system (only a few percent actually). Unfortunately, not many payment processors are verified to process subscriptions across all platforms. Lightcast EasyPay uses the largest verified credit card processor: CardConnect / First Data. It is not possible to replace them for another payment processor as they are fully integrated within the EasyPay Multi-Platform Authentication & Subscriber Processing System.