At the moment the roles of attacker/defender nor the techniques to be used are not predeterminated.
I think we are of the same opinion on sparring Demetrio.
If we agree to use 1 throw and take turns is it sparring?
If we agree you can choose between 2 throws with similar openings in no order and take turns is it sparring?
If we agree to practice a counter and take turns is it sparring?
If we agree to use 2 throws and counter in no particular order and take turns is it sparring?
Even if you limit the number of techiques you can throw (meaning your opponent knows that you are going to move in a certain manner) you still have the random element.
And I agree, sparring is practice. I wouldn't want to practice any martial art without sparring simply because to the martial aspect somewhat demands it. The art must be viable in and out of the dojo and that skill set can only be achieved by some level of sparring no matter what name or face you put on it.