You are lying, they will never add ripple, they have already confirmed it
Coinbase will add Ripple to their stable no later than the Jan-Feb timeframe. Monero still does not have the volume that would make Coinbase take interest yet.
Ripple is a 100% centralized coin, there is no way that it could be listed on coinbase, no matter what.
it is writen on their ToS, they will never allow centralized coins.
it is the same as adding bitcoin as a payment method on a bank, it would be all the opposite of why it has been created for.