Also put in which update/version they were added/changed/removed (If you know which ones). Also try to only put additions, changes and removals that weren't already in the game when you first played it. My favorite additions are the scoreboard system and the types and modes of command blocks.
I like when Herobrine in the game But he has the steve skin.And The changes is that You can ride horses Because Pigs are a Slow.
Additions: Rabbits and Shields Changes: The horse wall glitch (1.7 or 1.8 I can't remember). Removed: Herobrine.
Horses. Since you can ride then into the sunset and pretend you are in a 1900 cowboy/cowgirl love story! (Totally not my reason I like them. *Sweats and laughs nervously*) :p Also shields because I just like the idea of using shields. However for some reason I still prefer blocking damage with your sword instead. (Which will sadly be removed with the addition of shields)