teacup
Auror
Note that I said the world, not just other minor characters. Phil Coulson's death in Avengers was intended to give everyone something to avenge (because, you know, they couldn't have possible gotten mad enough to pull themselves together and defeat Loki otherwise), and we were meant to assume that Hawkeye and Black Widow, for instance, were as affected as Iron Man and Captain America.
But it had absolutely no effect on the rest of the world they inhabited, which is why Whedon was able to cave to fandom's demands that he resurrect Coulson, without screwing up the broader world. I haven't watched Agents of S.H.I.E.L.D. so I don't know what the official explanation for Coulson's return is, but the fact that it happened at all is evidence that there were no lasting effects from his death, apart from accomplishing something that could have been done some other way, and that adds up to a pointless death.
I could be wrong, but wasn't his "death" made up by Fury to do this effect? He never actually died, as I remember. (Something to do with the Captain America cards being in Coulson's locker, not his jacket.)