Don't pretend this mechanic is something we should have known about.
"Pay attention?" This system does not mirror any other system in-game.
"Warning message?" Yeah, not buying it.

I'm happy with my chocobo's spec currently when on my main class. I just think it is hilarious that we are playing a game designed around multiclassing and then are given a combat companion that doesn't work within such a system. Currently the system is all about working your butt off for a companion that will be helpful to some of your classes and useless to others.

I'm not so impatient with MMOs to where I will moan forever if something is incomplete* at launch, but give us some information before we start rather than waiting for people to figure it out on their own and give us some information about what you plan to add to fix the problems.

*And yes, the current system SCREAMS "incomplete." They have hinted at more in future patches. So stop defending the incomplete design as if it were good.