Option for setting more than one Default currency under General Option tab

Scenario: Imagine offering separate memberships for national and international users, with respective currencies. For example, Indian users pay in INR (Rupees) and international users pay in USD (US Dollars). Ideally, Indian users would choose Razorpay for payment, while international users would use PayPal.
Problem: Setting the default currency to USD would prevent Indian users from using Razorpay, and vice versa.
Proposed Solution: There should be an option for setting more than one default currency under the general options tab and manage plan tab