It is confirmed that Banjo Tooie cannot be played in CD64 without a crack released, so there is no use to test it anymore.
CD64 only allows a game to boot using CIC-NUS-6102. Unfortunately, this BT games will check the existence of CIC-NUS-6105, which is impossible for CD64 to provide.
Therefore, there is NO HOPE for us right now..
Let's just hope that there will be a crack released.