At the end of RoboCop, there is this interesting dialogue:
Lewis: Murphy, I'm a mess.
RoboCop: They'll fix you. They fix everything.
Did the writers originally intend for Lewis to come back as a RoboCop in a sequel?
Doing some digging, I came across a version of the script which ends with Office Lewis recovering in a hospital bed.
So, the answer is, No.
1 The video was briefly removed due to copyright violation, it is now restored.