In orbit, while in a fireteam, there should be a visual indicator on a player's emblem as to what champion breaker mods they are currently running, including any equipped exotic weapons with intrinsic breaker abilities. This would let fireteams confirm, at a glance, whether or not they're ready for the nightfall/raid/dungeon that they're about to go into. Someone may have already made this suggestion, since I think I got it from one of the D2 content creators. Still, I want to surface this suggestion because I think it'd be a useful change.