It sounds like you're looking to create a robust and user-friendly SwiftUI checkout form. Here are some suggestions based on the user's needs and common requirements for an online checkout:

- Include fields for credit card number, expiry date, CVV, and name on card. Use autocomplete modifiers to speed up data entry.
- Include fields for shipping and billing addresses. Use autofill to suggest addresses the user has saved to their account or device.
- Implement validation to ensure required fields are filled out and information is in the proper format. Display clear error messages if information is invalid.
- Integrate with a payment gateway to securely process transactions.
- Include accessibility features such as support for screen readers and high contrast options.
- Consider a streamlined, easy-to-navigate design to create a great user experience.

Does this cover the major features you were looking to include in your SwiftUI checkout form? Let me know if you have any other questions.
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