Looking to make an NFC Hardware Wallet in the form factor of a credit/debit card

Hello friends,

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I am looking to make this just as a side hobby for myself. Everything would be completely open source and trustless so that the community can use this as well. This will have its own frontend app for everything other than signing transactions and creating the private key. This is what I would want the workflow to look like from the perspective of a user other than me:

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1. The hardware wallet card creates the private key
2. You scan the card on an offline card reader with a display that shows the seed phrase, then shreds its own RAM
3. Store the seed phrase somewhere safe, secure, and IRL
4. Scan the NFC from the hardware wallet card to your phone with my app installed to do a firmware check to make sure your hardware wallet card hasn't been part of a supply chain attack. Enter a passphrase and biometrics that will be used to encrypt the hardware wallet card chip.
5. When it comes time to send crypto, scan the NFC from the hardware wallet card and enter your passphrase or biometrics. If failed 3 times, the hardware wallet card chip shreds all contents. If successful, the transaction will be sent to the hardware wallet card where the secure chip will sign the transaction and relay it back to the phone.

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Is this something the cryptocurrency community would be interested in? Are there any flaws in the flow where something is not 100% trustless? Thank you!