What can't be solved is the 'trusted setup'. A 100% no go if you use the coin for it's fungibility and privacy. Who wants to risk jail time or life based on trusting six people? I rather trust the math and maybe myself to some extend, although external pressure goes a long way. A 5$ wrench comes to mind.
Additionally the 20% cut to the founders of every block found, for four years, can only fixed by forking. Which I would encourage.
I just don't understand the hype, except for traders and speculators trying to earn some extra BTC / XMR / USD.
Zooko's proposed solution to verifying this has not happened is to force people to periodically move all hidden coins to the public blockchain, or lose those coins.
you forgot the /s tag, right?
No, they are serious about this proposal. See:
https://www.youtube.com/watch?v=P6RLjcGVUnw&feature=youtu.be&t=29m00s
&
http://weuse.cash/2016/10/28/the-untrusted-setup/ (under "Chain rollbacks")
What? damn, mindblown here...
This is a techno-geek speaking without any understandig of monetary theory/economics...