You are underestimating how hard just managing pricing in subscription bundles are once you have expanded to multiple countries and currencies. Pro-rating, different billing schedules, trials, testing the new prices, pricing per region, taxes per region, listing your bundles with different currencies and rolling out new prices is suddenly 6 currencies * X regions * Y products * Z billing schedules * L different languages. All of this while you will be adding new subscriptions, merging subscription plans, discontinuing old plans while gracefully rolling customers over to alternative new plans all the while communicating well with the customers. And since you are doing SAAS, pretty much all has to be automated and self service and well tested or you will drown in customer support and customers leaving.