Thanks very much!
I like Eddard a lot, and a big part of my motivation for doing a chapter-by-chapter analysis of AGOT was to try to rehabilitate his reputation among the fandom. And judging from more recent discourse in the fandom, I think I’ve been reasonably successful.
As far as his impact on Westeros, look at how the North remembers “the Ned” and is willing to rise up against the Boltons in allegiance to his memory and his children.