Its a nice idea, but I would 2nd what nout said. Recommendations:

1. First make sure that user understands they need to onboard BTC before "minting" (ie. Mint button should be disabled if no available funds).
2. Provide some way for users to backup / restore their seed phrase
3. Until the wallet can send / receive these assets, whats the point? I mean I can create some assets but they must just stay in my wallet?