Originally Posted by
Timber Wolf-By-Night
I remember back in the 90's when Dan Jurgens took over Justice League America after Giffen & DeMatteis finished their run, and all he really did was keep the core JLI roster of Beetle, Booster, Fire, Ice, and Gardner, ditched J'onn and Batman as being the 'senior' League member(s), and replaced those two with Superman (while also adding recurring erstwhile Super-foe Maxima and Bloodwynd, one of the most poorly handled 'new/original-to-the-League's-ranks' characters ever [even worse than Vibe]), while he was also one of the core Super-creators, and he totally distorted the League under Superman's shadow. Didn't help that one of G&D's greatest strengths was their skill at strong, nuanced characterization, giving each character their own distinct personality, and Jurgens just flattened those personalities into one-note shadows of what they previously had been (or that apparently one of the guiding post-G&D editorial mandates was "NO HUMOR ALLOWED, everyone must be serious"). Or, more recently, when Marvel briefly revived the Thunderbolts title by bringing together the core original membership of Atlas, Fixer, MACH-X, and Moonstone (soon to be rejoined by Songbird) under the 'leadership' of the Winter Soldier, who was also being the guardian to Kobik, aka "What if the Cosmic Cube was in the form of an obnoxious little girl?". The damn book should have been called The Winter Soldier and Obnoxia the She-Clown (Guest-Starring the Thunderbolts), that's how badly the 'team' was made supporting cast of their 'super-star' leader. Or when Earth-2 changed writers from Robinson to Taylor, and Robinson's cast of characters became bit players to Taylor's cast of alternative-world-Trinity-related-characters.
Basically, it is far, far more likely that a team will be completely overshadowed if you give them a "super-star" new member or leader, or even just a mandate to have super-star-related characters join up, than it is that said "super-star" will be more smoothly integrated into said team.