Part 91 Issues
It will be interesting to see how some of the vintage / amateur built aircraft (eg things like Tigers, Austers and Champs) will comply with the requirement to be fitted with external lights (nav, beacon and strobes).
I also see the requirement to fly at altitudes complying with the hemspherical rule (odds/evens plus 500’) starts at 3000’ AMSL instead of the current 5000’.
Anyone spot any others yet?