Making running the node optional highly reduced the crash-rate - but also crippled the functionality as sending transactions needed the node to be running. I had an idea in mind how to metigate this, but the API from the in-process node did not yet offer the required functionality. But the go-team just needed 3 days from request to implementation - so great - big shout out to Péter Szilágyi aka karalabe!

In this process I exposed the fee-values and linked to ethgasstation so users can adjust the values in an informed way. At some point I will hide this behind some advanced setting but for now this should be OK as most users (currently) have a ethereum/tech background anyway.