Nice but... Please no AI, and an ethernet port. Many will never self-host on generic iron, but could buy ready made iron with FLOSS on top as a fw, so that's a very nice idea, adding LLM though even if "local" it's a big minus for many and be wifi only is not good for some as well. A WebUI served in LAN would be nice, since voice commands can't really be a useful UI beside the wow effect for common folks.

Many exchanges offer APIs to trade with them, supporting some and allow operation could be a kind of features completeness selling to common folks "this device is FLOSS, well hardened, you can operate on some exchange and keep you own bank/your assets monitored". Optional ASIC with bitcoin core + Lightning node set up like Umbrel/Start9 would be also nice additions. A compact "personal bank" at home.