GONZO, I can see your point about the number of FDE's in the bay. If I find myself in a situation where I am running ot of 'bay space,' I tend to minimise the FDE and then expand them again if I need additional info that would not be displayed in the minimised mode. Our EFPS GMC configuration is such that we have a 'spare bay,' which is useful either for ground vehicles or as a spill over for a/c.
I'm sure you guys know all this anyway. Good luck!!!