Note: Not sure which thread I should've posted this in.
This idea comes from harnessing the power of pre-war and institute technology to create your own Robot.
Choose you're model i.e. Codsworth, Assultron, synth
Have in settlements Robot upgrade station in which you can change their weapons, voice(pitch), armor.
Also create basic robots for settlement defense would be fun.
Any more Ideas related to this are welcome.