Frequently in the process of laying out manufacturing cells, we run into the problem of shared equipment. A machine that is used by 2 different product families but cannot be duplicated. And in the discussions about how to deal with this, someone inevitable suggests that we put the shared equipment half way between the 2 cells, as a compromise.
I'm generally opposed to this type of "compromise" since it simply screws up the flow in 2 cells instead of 1. Instead I suggest we put the equipment in the cell that uses it the most and then figure out how to deal with a curtain process in the remaining cell. I find this greatly simplifies the problem and actually does a better job of highlighting it. It also has a net positive impact on inventory.
The approach is to stay focused on fundamentals and try to isolate, rather than distribute, the exceptions. The only problem is that now I have a reputation for not being willing to compromise.