To be honest, as much as i find bitcoin interesting, I cannot wait for the crypto-currency bubble to burst for good. Think of it, all that 'wasted' processing power could be turned to distributed processing projects, possibly even monetised in it's own right.
Thinking on it, repurposing crypto-currencies to reflect a unit of real work instead of an arbitrary hashing process could be a good way to monetise research that involves the public. Cancer research simulations, brute force testing of encryption algorithms and more besides could be reflected as a unit or partial unit of currency based on the current philosophy, using the bitcoin, litecoin, doge coin or whatever algorithms as a baseline for what a 'unit of work' is worth to allow a relative worth to be attached to such work.
Just a half baked early morning thought, but companies could even mass purchase crashed crypto-currencies to get a bank of recognised tokens to use in such a process.
Tl;Dr: when the bubble on speculation and generation bursts, crypto-currency could be put to better use as a new set of fiat currencies reflecting the perceived worth of conducting a real-world specific distributed processing activity. Until then it is yet another Libertarian fantasy generating profit for a few under the weight of dwindling public-interest fuelled momentum, and the bad choices of those who do not break even (fuelling the former profiteers).