Fate Strange Fake, something happened! It's one of the more obvious things but it's something. Gilgamesh was mainly there to bait fans of the original series, he doesn't really have any self agency and just there to give a "your kungfu is weak" speech to Saber before dying unclimatically due to absolute bullshit writing that doesn't even make sense and depends massively on the two random characters being summoned to the grail war in different methods and Ishtar being so assmad about him that she finds the key to his value just for the oft chance he was summoned. Besides that the Hercules part is generic "character does X but it is immediately not effective because of Y". Peak writing.
Aura farming is basically mid battle cool posing for no reason. I admit I really like the term because it is a really good description of what the characters do.