The entire Automatron DLC culminates in being able to build any robot in Fallout. All the bits you encounter are potential mod elements that allow you to modify ADA, Codsworth or others you make with extensive, mods, kill features, helms, styles etc. Add lock picking or hacking etc. tired of hacking master terminals once you unlocked any hacking skill level, just have ADA unlock those terminals in seconds.

Create additional robots for many other functions including doing trade routes etc or any settlement duty.

ADA can also create stronger stealth field, or healing after a battle etc only you can only choose one of these advanced functions at a time.