The impact of Lucha Underground in the pro wrestling world is incredibly underrated and ignored way too much. Look at this list of achievements:
Pushed Ricochet as its top face and developed his non-existent character work.
Revitalized the career of John Morrison.
Revived the career of Rey Mysterio Jr.
Turned Judas Mesias from TNA into one of the most legit monsters in wrestling today.
Popularized the likes of Fenix, Pentagon, Drago and Aerostar in the US (with Pentagon now being one of the top stars in the world).
Popularized tons of indie talent such as Willie Mack, Bryan Cage and Matt Cross.
Made inter-gender matches work.
Made Vampiro and Konnan relevant again (maybe too relevant since they'll be facing each other in the ring once more).
Gave Chavo Guerrero (arguably) the best match of his career.
And almost all the above was achieved by only two things: Great booking, and great wrestling!