Facilities feel underwhelming.
The process of building modules into each product gets lost when the player gets to the facility. The facilities are boring black box machines with fancy decorations stacked on top of them. The most interesting part of them is the building of those decorations.
One basic solution might be changing the uniform box of each facility into something more unique at the base level to give them unique silhouettes, and then have the player required to feed modules into the facility at set locations. Then let us go 'inside' like we do with cutters, stampers, assemblers, etc. The droid facility for instance might need the core first, then the largest, then second and then smallest modules in that order. If modules are sent incorrectly, have the factory manufacture it wrong for a surprise 'whoops' moment. These accidental products might also make for another variant of challenge item as well.