May I suggest a feature : stable crypto in decentralized way.
The aim is to perform like
dynamic coin for variable miner reward plus adding a minimum miner transaction fee like whats being done for other cryptos like clamcoin. Were if exchange rate would do down, a part of the fee would be send to nobody resulting in more coins destroyed than created (of course this imply a target exchange rate below 1:1 like 1000:1 but price would remain stable)
As result it would be the first coin to fully apply
https://en.wikipedia.org/wiki/Quantity_theory_of_money in a decentralised way (unlike tether.to), though this might not work if maximum supply has a limited amount.
It would be the first coin created that would be able to achieve parity with the gold standard for a long time.