[rzodkiew]

I would like to see some sort of cryptocurrency to be successful, just to satisfy my inner nerd, but I'm afraid most of its problems might not be technical in nature.

Cryptocurrencies have potential to drastically change how recognition of value is created and distributed, so that's definitely an avenue to explore. Most of the big cryptos that are out there today don't really try to explore that, and currency is something external to value generation and recognition. I'd argue that even fiat currencies are actually closer to the value generation (as the money creation happens when banks give out loans, which at least are supposed to make world better). Purely from cryptocurrency perspective the only thing that it values is keeping the ledger alive. Exactly those self-sustaining by all means mechanisms are what leads to rot in many areas of life (academia, politics, corporations, you name it).