I would like to request the addition of a feature that allows for the inclusion of free input fields within custom payment methods in Shopify. This feature would enable merchants to create custom payment methods where customers can enter specific information directly during checkout.

The input fields should be flexible, allowing merchants to define and customize the type and number of fields required. This would significantly enhance the functionality of custom payment methods by accommodating various business needs and customer requirements.

Use Case Example:

For instance, a merchant might need customers to enter their account number and a specific transaction reference during checkout. By having the option to add these free input fields to the custom payment methods created in the Shopify backend, merchants can collect essential information seamlessly, improving the checkout experience for both the business and its customers.