Henderson is a weird one good at his role but a bit limited and seems to be the glue that holds there midfield and press together. Statistics tell he's important for klopp however it's a very niche role which combines his best attributes good athleiscm and ability to organize a press.
Useless outside of it and I hazard a guess that England won't do jack at the Ueros next year due to shoe horning of Henderson.
Pigs ass that he is as influential as the likes of KDB, Silva, Aguero, Mane, VVD, Auba ect. Good players elevate those around them regardless of situation