Originally posted by: masamuneehs
I was always hoping that Summoned monsters would be based on the individual characters. One character being able to make a pact with Ifrit and then turn around and do the same with Shiva never really boded well with me... I'd imagine such powerful and ancient creatures would have their own agendas and preferences in who they answered to...
Not a bad idea at all...

And, I think they tried to somewhat implement that in VIII with the compatibility system. Now, I know that saying such a thing is easily defeated by the fact that the compatibility system can be tweaked so that any GF could favor EVERYbody, but I'm pretty sure that when you first get a GF, its preferences usually favor one character out of the rest. So in a sense, it has been done.