Idea Repertoire describes the stock amount of ideas certain writers continually fall back upon, no matter what type of comic they're writing.
I do not think having an idea repertoire is a NEGATIVE thing, really. It is just something that you notice when you read a writer a lot, that certain ideas keep showing up.
Brian Bendis has now killed off Scott Lang twice in his comics.
Chris Claremont uses slave traders a lot.
Karl Kesel is obsessed with old Kirby characters.
Greg Rucka has introduced two strong female characters, both of whom were totally fixated on the star, male character.
What other idea repertoires spring to your mind?