jodyjohnson
Adventurer
The other editions are even more irrelevant. No other edition was play tested as much as this edition. This edition learns the errors of the previous ones.
After going back to the sources I'll note a few other 5e Rules that appeared between the 'greatest open playtest in history' and their publication in 5e. These were unvetted by the masses outside of the same playtesting cabal that brought you 4e.
1. The Bonus action
2. The Beastmaster Ranger
3. The -5/+10 mechanic for Sharpshooter and Great Weapon Master
4. Crossbow Expert
5. Wildshape/Polymorph as ablative Hit Points
6. Barbarian Damage Resistance while raging
7. Most of the subclasses
8. The Sorceror
9. The Warlock
That's just a sample. Most of my houses rules came out of the playtest packets we played publicly for over a year before the 'Final' version released.