Yeah I kind of agree - the barge was more a backdrop than a "character" - its key purpose would be as a display base for lots of figures, not necessarily as the vehicle first and the figures as supporting eye candy.
Vehicles like the AT-AT, Snowpseeder, speeder bike and the Falcon obviously are iconic - even the Star Destroyer - but the barge does have that "backdrop, not vehicle" thing partly because that's the way its used in the movie. You never see it in battle, chases or moving heroes or villains around scene to scene, it's a setting that gets blown up.