Would love to have a financial data aggregator a la Quicken or Mint using Proton encryption and collaboration to be able to be shared with my partner on my Proton Duo account. Net Worth, Budgeting, Retirement, Debt tracking, Credit score tracking, receipt tracking, etc. Integrate via Mx or Plaid, use budget notifications. Maybe even pairing with ID Protection insurance programs like Lifelock or Allstate ID Pro+.