Interesting series of tweets by Peter Todd on the zcash founder mining reward:
It's not a matter of what's fair or not, it's a matter of what's good for the ecosystem
e.g. 20% is so high it's a significant help to a 51% attacker.
Equally, tying reward to market cap isn't necessarily ethical - can lead to scam incentive
And like it or not, @zcashco is very likely to be seen by regs as soliciting investment.
I should add a writeup of this concern to the disclaimers on my trusted setup post.
https://twitter.com/petertoddbtc/status/794331782241984512His write up should be interesting!