For those concerned about Captain Marvel potentially stealing the limelight and thunder from the older characters in ENDGAME, Kevin Feige had this to say to Empire...
"People would point out that that Cap wasn’t in Infinity War a whole lot. And Iron Man didn’t really speak for that last half hour because of what was going on. But those characters, and all of the original six, are very much the focus of Endgame in a very personal and emotional way."
Last sentence bolded for emphasis.
Carol Danvers, Scott Lang, Rocket, and Nebula will be important support pieces, but it's all about the original team, thematically and emotionally.