Two things I want:
  1. bulletproof self-custody inheritance system. afaict most models operate on a shared-custody model and inheritance is a high trust condition if the inheritor is a noob.
  2. mercury.com but with configurable mix of Bitcoin and fiat where accounting is done automatically. It'd be nice for small businesses to also get into the Bitcoin treasury game but without needing an accountant on staff or have some hodgepodge of services.