Building a transaction scheduler

I am building a transaction scheduler service. It allows you to send in your signed transactions to be broadcast at a future date, secured by a timelock.

Use cases:

• Scheduled payments
• Fund recovery if you lose access to your keys: https://medium.com/@bitcoinwarrior1/utxo-based-backups-an-idea-for-bitcoin-cold-storage-21f620c35981
• Scheduling a transaction to be broadcast when fees are lower, ensuring they don't get stuck in the mempool

Do you think such a service has value? How would you improve it?

Codebase: https://github.com/bitcoinwarrior1/transaction-scheduler