one of my favorite Cap scenes was the point in the Onslaught story when the Avengers were fighting Post and whomever, when Cap said, "we can't win." He just deadened the other Avengers, a great example of his leadership and inspiration to tohers. I find in his solo series these days that he is not inspiring to others. I've seen no real use for Sharon Carter's resurrection. Cap's relationsip with Diamondback worked for me because he was inspiring her to something greater.
His inspirational qualities is also, I think, the main element missing from New Avengers.