So, the answer I fiqured out must be loyalty to Aikikai. It must Aikikai or Hombu favored system, any other school is no no. I am a 2nd Kyu. I think I will buy time, take shodan and then decide from there.
Just a thought - your teacher may not allow you to take shodan, or may delay you taking it, if he suspects that you won't stay solely with him after getting that grade... It's not unknown for this to happen.