The game has a few small locations (excluding the large Monarch). Moreover, we return to the same locations several times.
Not enough space, distance.
What is good in fillers? Each location is not associated with the quest, however, is able to tell a story, reveal lore, provide a unique gameplay situation, contain unique items.
The game has difficulties with unique items. At a certain stage, the content begins to repeat - the same weapon, the same armor. Unique things cannot be infinitely improved because of the price. Therefore, they also quickly lose relevance.
I am not saying that this is not enough. But this is enough for about two-thirds of the game.
There would be more locations in the game. Hephaestus. Or some other abandoned station.
The Tartarus - a prison planet, could be made more interesting. Not only as a final point, but as a location with quests. I don’t know if anyone played here, but remember the Chronicles of Riddick Escape from Butcher's Bay.
It may seem that I did not like the game, but it is not. I liked the companions, the plot, the combat mechanics (it’s just good), the variability like immersive sims, the game’s universe.
In this world, developers could tell much more stories.