Unleaded Avgas
The target FAA certification date for unleaded avgas remains 2018. We'll see. According to an AOPA article from about 6 months ago, progress has been steady. So probably there is no need to worry about gasoline burners going the way of the dinosaur on account of leaded gas! Running unleaded is going to solve more than one problem.
The arguments for and against EECs for aero piston engines are well-known and long established, though perhaps somewhat less so than the tried and true magneto itself.