Ukemi: pluses and minuses
I've heard from a couple different sources the idea that the "ukemi model" for teaching is a bad one because it teaches us to give away our center. My understanding is that "proper" ukemi demands uke try to be nage (i.e. tries not to just give it away, but to hold onto it, especially when in compromised situations); nage and uke are trying for the same thing (displacing the other person). I can see how simply going for the fall ("tanking") is counterproductive and potentially dangerous; I can see how just allowing nage to move you no matter what is also counterproductive...But isn't the "ukemi model" only half of the "nage/uke model?"
Despite being fairly new to Aikido, I quickly see a huge benefit to taking ukemi, but maybe once I get less new this will change.
So I have two basic ideas I'm hoping to get addressed here: I'm curious if a distinction could be made on what exactly is meant by the Ukemi Model? Also what are the pluses and minuses that you find come from your study/practice of ukemi?