Floorplanning is an visual art. I believe this process can never be fully automated. What I mean by this, you cannot just simply push a button and let the tool do the job and give you a production quality floorplan the very first time.
You can automate the process, but the user should still drive the process. He should be able to define all the requirements and let the tool do its job and then review the result.
The intent of automation at the floorplanning level is only to reduce TAT and arrive at your final result pretty quickly. The user has to understand that there can be never one flow/size fits all and since each design is unique, you might need provide all inputs to the tool sothat it can converge on a good quality floorplan in decent time and the user can spend just few hrs in making it a production floorplan as opposed to spending couple of days/weeks.
